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NNADVOKAT [17]
3 years ago
11

Brian and Christina started keeping track of their workouts. Brian did 85 sit-ups the first week and 90 sit-ups each week after

that. Christina did 65 sit-ups the first week and 90 sit-ups each week after that. How many sit-ups will each person have done after 5 weeks?
Mathematics
1 answer:
IrinaK [193]3 years ago
6 0

Brian-90×5+85=535

Christina-90×5+65=515

So after 5 weeks Brian will do 535 push ups and Christina will have done 515.

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The rule is "whatever the input is, multiply it by 5, then subtract 2"

For example, if the input is 4 then 4*5 = 20 and 20-2 = 18
So in short, the input 4 leads to the output 18 as shown in the top row of the diagram. 

The answer is the box on the bottom row, right hand side where it says "x 5"  and "-2" in the two bubbles.
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