Unit 1: Slope and Rate of Change. - St John Brebeuf

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Apprenticeship and workplace Math 11 St.John Brebeuf Example 1 Karli and Josef drive delivery trucks. Karli gets paid $20 per hour and Josef gets paid $16 per hour plus a $20 gas allowance at the beginning of each workday for using his own vehicle. a) Write an equation to calculate each person’s earnings. Use p for pay and h for hours. Graph 5 points of data for each person on the same graph. b) Who makes more money after 3 hours of work and how much more c) When will they make the same amount of money d) Who makes more after 9 hours of work and how much more e) Calculate the slope for each graph. What can you conclude from these values Solution: a) Karli Josef Hours Pay Hours pay 1 20 1 36 2 40 2 52 4 4 6 6 8 8 S.Duffy Page 10
Apprenticeship and workplace Math 11 St.John Brebeuf Equation for Karli: Equation for Josef: p Pay ( $) b) Time (h) h c) S.Duffy Page 11
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Unit 1: Slope and Rate of Change. - St John Brebeuf

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