Answer:
Explanation:
let the number of copies she sells = x
let her total pay = $y
the relation between x and y is described the equation,
y = 90x + 2300
a)
change in Christine's total pay for each copy of math is fun she sells:
change will be 90 times number of copies she sells and then added to the constant 2300
b)
if number of copies she sells, x = 0
Christine's total pay, y = 90(0) + 2300
= 0 + 2300
= $2300