Question

2) John saved $5 in the first week of a year and then increased her weekly

savings by $1.75. If the nth week, her weekly savings become $20.75, find n.

Answer 1

n = 9

Explanation:

20.75 = 1.75n + 5

20.75 - 5 = 1.75n

15.75 = 1.75n

------- -------

1.75 1.75

9 = n