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Name_______________________LESSON 6 Study Guide A whale descends 382.5 feet in 45 seconds.Part AWrite an expression that can be used to find the average elevation change of the whale during its descent, in feet per second.Answer: ___8.5____ (divide) Part BThe whale’s elevation changes at a constant rate. What is the elevation change of the whale after 6 seconds?Answer: ___51____ feet (multiply by 6) The table shows yesterday’s change in value of four different stocks. StockChange in ValueA-$1.25B-$0.50C-$1.50D-$0.25Which of the following statements are true? Choose all that apply.A The change in value of Stock C is 3 times as much as the change in value of Stock B. TrueB The change in value of Stock D is 4 times as much as the change in value of Stock C. FalseC The change in value of Stock B is 4 times as much as the change in value of Stock A. FalseD The change in value of Stock A is 3 times as much as the change in value of Stock D. False Suppose -1 < a < 0. What must be true about the value of b so that a > ab?A b < -1C 0 < b < 1Make a = -12B -1 < b < 0D b > 1 Make b = 2-12 > -1 Four submarines start at sea level, which is 0 meters.The table shows the change in position per minute, relative to sea level, of four different submarines.SubmarineRate of ChangeA -3 ? per minuteB -4 ? per minuteC -6 ? per minuteD -2 ? per minute Part AAfter 7 minutes, what is the position of Submarine D, relative to sea level?Show your work.Answer: _____-2 ? x 7 = -16.8 or -1645_____________ metersPart BSubmarine E also starts at sea level and its position relative to sea level changes at a constant rate perminute. Submarine E is at -32 meters after 10 minutes.In 1 minute, Submarine E travels -3.2 metersChoose True or False for each statement. Submarine E changes position faster than Submarine D. ? True ? FalseThe position of Submarine E will be between the positionsof Submarine C and Submarine B. ? True ? False The position of Submarine B changes twice as fast as ? True ? FalseSubmarine E. d. The position of Submarine E after 10 minutes is closer to sea ? True ? False level than position of Submarine A after 10 minutes. ................
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