169_186_CC_A_RSPC1_C12_662330.indd - 8th Grade Website



Weekly Homework: 5-12-14Solve Multi-Step Equations1. AGES Mel is 3 years older than Rahfat and Aurelio is twice as old as Mel. The sum of their ages is 57. How old is Mel?2. SALES Ye has his own business. He checks his sales receipts three times a day. One day, his afternoon sales were $50 more than his morning sales, and his evening sales were three times his afternoon sales. If his total sales for the day were $1,000, what were his evening sales?333375693420003. POLYGONS The triangle and square shown below have the same perimeter. What is the length of one side of the square?4. PRESENTS Torrance is buying presents for members of his family. He wants to spend $10 less on his brother than he spends on his sister, and six dollars more than twice the amount he spends on his sister on his mother. If Torrance has $100 to spend, how much does he intend to spend on his brother?5. NUMBERS Pasha is thinking of a number such that when twice the number is added to three times one more than the number she gets the same result as when she multiplies four times one less than the number. What number is Pasha thinking about?6. SAVINGS Garland put 2b + 3 dollars in the bank in the first week. The following week he doubled the first week’s savings and put that amount in the bank. The next week he doubled what was in the bank and put that amount in the bank. If he now has $477 in the bank, how much did he put in the bank the first week?7. FOOD Nendell saw the following sign at a diner. If he bought one of each item and spent $7.50, how much did the drink cost?657225235585ItemCost ($)Burger3x + 0.05FriesxDrinkx + 0.1000ItemCost ($)Burger3x + 0.05FriesxDrinkx + 0.108. WORK Colby worked three more hours on Tuesday than he did on Monday. On Wednesday, he worked one hour more than twice the number of hours that he worked on Monday. If the total number of hours is two more than five times the number of hours worked on Monday, how many hours did he work on Monday?Lesson 1 Homework PracticeScatter PlotsInterpret each scatter plot.251460037465002762253746500484822527940001.2.3.4. RIVER Construct a scatter plot of the river’s width and the water’s speed.31432583185River Width (m)15182028303238404245Water Speed (km/h)12.610.711.29.78.18.76.95.43.94.100River Width (m)15182028303238404245Water Speed (km/h)12.610.711.29.78.18.76.95.43.94.1361950456565Years Since 200712345Number of Cars142130283500Years Since 200712345Number of Cars14213028355. DONATIONS Construct a scatter plot of the number of cars donated to a local charity over the past five years since 2007.Lesson 2 Homework PracticeLines of Best Fit4381500244475001. BALLOONS Salina is having a surprise party for her friend Ernie. The table shows how many balloons she has been able to blow up by the end of each 10-minute segment.40957546990Time (min)1020304050Balloons31215162100Time (min)1020304050Balloons312151621a. Construct a scatter plot of the data. Then draw and assess a line that seems to best represent the data.b. Use the line of best fit to make a conjecture about the number of balloons she will have blown up at the end of 70 minutes.4381500149225002. COMIC BOOKS Sidney is selling his comic book collection on the Internet. The scatter plot shows how many comic books he has left at the end of each day.a. Write an equation in slope-intercept form for the line that is drawn.b. Use the equation to make a conjecture about the number of comic books he will have at the end of the seventh day.433387562230003. ICE RINK Maury has an ice rink in his back yard. The scatter plot shows the thickness of the ice relative to the temperature.a. Write an equation in slope-intercept form for the line that is drawn.b. Use the equation to make a conjecture about the 13 inches.Lesson 3 Homework PracticeTwo-Way Tables41814751587500For Exercises 1-6, use the Venn diagram at the right and the information below.The Venn diagram compares the roller coasters at an amusement park as to whether or not they are made of steel and whether or not they have loops.1. Complete the two-way table below.2. How many roller coasters are at the amusement park?114300107315SteelNot SteelTotalLoopsNo LoopsTotal00SteelNot SteelTotalLoopsNo LoopsTotal3. Find the relative frequencies from the4. Interpret the relative frequencies youtable in Exercise 1 by row. found in Exercise 3.123825102235SteelNot SteelTotalLoops610= 0.60 No Loops00SteelNot SteelTotalLoops610= 0.60 No Loops5. Find the relative frequencies from the6. Interpret the relative frequencies youtable in Exercise 1 by column. Round tofound in Exercise 5.314325250190SteelNot SteelLoops68= 0.75 No LoopsTotal00SteelNot SteelLoops68= 0.75 No LoopsTotalthe nearest hundredth if necessary. ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download