Answer:
The remaining balance on the card = $44.50
Explanations:
The remaining balance is given by the function:
B(x) = 45.50 - 0.05x
The number prints, x = 20
To calculate the remaining balance, substitute x = 20 into the function B(x)
B(20) = 45.50 - 0.05(20)
B(20) = 45.50 - 1
B(20) = 44.50
The remaining balance on the card = $44.50