Question

Greta opens a savings account with​ $25. She saves​ $20 each week. The table represents her account balance. Complete parts a and b below.

​Greta's Savings Account
Week
0
1
2
3
4
5
Money in Account
25
45
65
85
105
125
Question content area bottom
Part 1
a. Write a function that relates the amount of money in​ Greta's account m to the number of weeks w.
m=
Please help me omg just give me m=

Answer 1

m(w) = $25+$20w

Explanation:

Let m be the amount saved and w the weeks since the account was opened. Greta starts with $25, so m(0) = $25.

She saves $20 each week, w. m(1), the end of the first week, Greta would have $25 + $20 = $45. This continues for future weeks. We could write this as the follwoing:

m(w) = $25+$20w

Week 5, for example, would end with m(5) = $25+$20*(5)

m(5) = $125.