PLEASE ASAP For 5 days, Tony put $4 into his savings account each day. His parents also added a certain amount of money to the account each day. In the end, there was a total of $40 in the account. How much money did Tony's parents add each day?

(a) Write an equation that could be used to answer the question above. First, choose the appropriate form. Then, fill in the blanks with the numbers 5, 4, and 40. Let represent the amount (in dollars) Tony's parents added each day.

o_(x+_)=_
or
o_(x-_)=_

(b) Solve the equation in part (a) to find the amount (in dollars) Tony's parents added each day.
x=_