Answer:
40
450
Explanation:
The amount of money added per week is 40 dollars because the function tells us for every increase in x by 1, y increases by 40.
The starting amount of money in the account is when x (the number of weeks before Debra has been adding money) = 0. When x = 0, the function gives
[tex]\begin{gathered} y=40(0)+450 \\ y=450 \end{gathered}[/tex]Hence, the starting amount of money in the account in $450.