Question

Xavier has $23.50 in his savings account. He deposits $35 every week. His mother also deposits $20 into his account every time Xavier washes the car. His savings account balance can be shown with the following expression.
20c+35+23.50
Part A: identify a coefficient, a variable, and a constant in this expression. (3 points)
Part B: if Xavier saves for 12 weeks and washes the car 3 times, how much will he have in his account? Show your work receive full credits. (4 points)
Part C: if Xavier's mother deposited $25 after each car wash, would the coefficient, variable,or constant in the expression change? Why (3 points)

Answer 1

The answers are shown below:
In part A: 
            coefficient = 20
             variable = c
             constant = 35 & 23.50
In part B: 
           savings = 20 (3) +23.5+ 35+35+35 +35 +35 +35+35+35+35+35+35+35
           savings = $ 503.5
In part C:
            the new expression will be: 25c + 35 + 23.5