A batting cage charges a flat fee of $5 to practice and then $1.50 per bucket of balls.
Write an equation that models the charges (C) in terms of the number of bucket of
balls (b) that you use
OC -1.50 b+5
OC - 5b + 1.50
Ob - 1.50 C +5
Ob - 5 C +1.50