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pochemuha
3 years ago
7

Abbie decides to start doing crunches as part of her daily workout. She decides to do 15 crunches the first day and then increas

e the number 4 each day after that. Write an explicit formula for the number of crunches Abbie will do on day n.
Mathematics
1 answer:
Pavlova-9 [17]3 years ago
3 0
For this case, the first thing we must do is define a variable.
 We have then:
 n: number of days.
 We now write the explicit formula that represents the problem.
 We have then:
 an = 4n + 15
 Where,
 15: crunches the first day
 4: increase the number 4 each day
 Answer:
 
An explicit formula for the number of crunches Abbie will do on day n is:
 
an = 4n + 15
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