Adam saves his $30 in a savings account. Each week, he plans to save $8 more.
Let x = number of weeks since opening the account.
The initial funds for the account are $30.
After x weeks, we will have added 8x more.
Thus, the total funds after x weeks will be:
f(x) = 8x + 30
By the 5th week, he will have:
f(5) = 8 x 5 + 30 = 40 + 30 = 70
Adam will have $70
Answer: