Question

Yohanna is conditioning all summer to be fit for the next soccer season at his high school. he incorporated walking planks into his daily workout regime.Each day, he will complete 4 more walking planks than the day before . If you he starts with 5 walking planks on the first day, how many walking planks will he do on the twelfth day

Answer 1

49.

Step-by-step explanation:

p = 4d+1

Easily verfied with a table:

day planks

1 5

2 9

3 13

4 17

5 21

6 25

7 29

8 33

9 37

10 41

11 45

12 49