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Homework  10.21.13                      Name:  ________________    Per:  ____  

ame ___________________________________ Name ___________________________________

Date Date_______________ _______________

Word Wordproblems problemsinvolving involvingrate rateof ofchange change 1.1. When Whenthe thedependent dependentvariable variableincreases increaseswhen whenthe theindependent independentvariable variableincreases, increases,the therate rateofofchange changeisis(Positive, (Positive, negative, negative,zero, zero,undefined) undefined)circle circleone. one. 2.2. When Whenthe thedependent dependentvariable variablestays staysthe thesame sameasasthe theindependent independentvariable variableincreases, increases,the therate rateofofchange changeisis(Positive, (Positive, negative, negative,zero, zero,undefined) undefined)circle circleone. one. 3.3. When Whenthe thedependent dependentvariable variabledecreases decreasesasasthe theindependent independentvariable variableincrease, increase,the therate rateofofchange changeisis(Positive, (Positive, negative, negative,zero, zero,undefined) undefined)circle circleone. one. 4.4. When Whenthe thedependent dependentvariable variableincrease increaseasasthe theindependent independentvariable variablestays staysthe thesame, same,the therate rateofofchange changeisis(Positive, (Positive, negative, negative,zero, zero,undefined) undefined)circle circleone. one.

he herate rateofofchange change undefined word wordproblems problemsare areunits units Identify Identifywhat whatyou youare aregiven givenand anddetermine determinethe theunit unitand andthe thetime.) time.) posi6ve  time zero   s lope   time nega6ve   he theordered orderedpair pair(time, (time,units). units). 5.5.

X 0 20 5 25

YY 35 35 40 40 6.6. AAclimber climberisison onaahike. hike. After After22hours hourshe heisisatatan analtitude altitudeofof400 400feet. feet. After After66hours, hours,heheisisatatan analtitude altitudeofof700 700feet. feet. What Whatisisthe theaverage averagerate rateofofchange? change? 7.7. AAscuba scubadiver diverisis30 30feet feetbelow belowthe thesurface surfaceofofthe thewater water10 10seconds secondsafter afterheheentered enteredthe thewater waterand and100 100feet feetbelow below the thesurface surfaceafter after40 40seconds. seconds. What Whatisisthe thescuba scubadivers diversrate rateofofchange? change? 8.8. AArocket rocketisis11mile mileabove abovethe theearth earthinin30 30seconds secondsand and55miles milesabove abovethe theearth earthinin2.5 2.5minutes. minutes. What Whatisisthe therockets rockets rate rateofofchange changeininmiles milesper persecond? second? What Whatabout aboutmiles milesper perminute. minute. 9.9. AAteacher teacherweighed weighed145 145lbs lbsinin1986 1986and andweighs weighs190 190lbs lbsinin2007. 2007. What Whatwas wasthe therate rateofofchange changeininweight? weight? 10. 10.Over Overthe thelast last50 50years, years,the theaverage averagetemperature temperaturehas hasincreased increasedby by2.5 2.5degrees degreesworldwide worldwide(I(Imade madethis thisup). up). What Whatisis the therate rateofofchange changeininworldwide worldwidetemperatures temperaturesper peryear? year? 11. 11. Michael Michaelstarted startedaasavings savingsaccount accountwith with$300. $300. After After44weeks, weeks,he hehad had$350 $350dollars, dollars,and andafter after99weeks, weeks,he hehad had $400. What is the rate of change of money in his savings account per week? $400. What is the rate of change of money in his savings account per week? 12. 12. AAplane planeleft leftChicago Chicagoatat8:00 8:00A.M. A.M.At At1:1:P.M., P.M.,the theplane planelanded landedininLos LosAngeles, Angeles,which whichisis1500 1500miles milesaway. away. What What was wasthe theaverage averagespeed speedofofthe theplane planefor forthe thetrip? trip? 13. 13.After After30 30baseball baseballgames, games,A-Rod A-Rodhad had25 25hits. hits. IfIfafter after100 100games gameshe hehad had80 80hits, hits,what whatisishis hisaverage averagehits hitsper per baseball game. baseball game.

Find Findthe theslope slopeofofaaline linethat thathas hasthese thesepoints points

Hw10 21 13  
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