Can someone please check my homework

Marla has $95.50 in her savings account. She deposits $5 every week. Her mother also deposits $20 into the account every time Marla washes the car. Her savings account balance can be shown with the following expression:

20c + 5w + 95.50

Part A: Identify a coefficient, a variable, and a constant in this expression. (3 points)

Part B: If Marla saves for 20 weeks and washes the car 5 times, how much will she have in her account? Show your work to receive full credit. (4 points)

Part C: If Marla’s mom deposited $10 after each car wash, would the coefficient, variable, or constant in the expression change? Why? (3 points)

Part A - the coefficient would be 5, the variable is w, and the constant is 20

Part B - 20(5) + 5(20) + 95.50 = money in account
100 + 100 + 95.50 = $295.05
$295,05

Part C - The coefficient will change because the 20 represents the money after each car wash which is the coefficient