Plug the -4 into equation
f(-4) = 5(-4) -3
multiply 5•-4= -20
then subtract -20-3
when you have two negatives you add
= -23
So you subtract $22.89 from $54.73 to get a total of $31.84 and that’s how much the customer paid.
C) X is greater than or equal to 0
(Domain is all the x-values the line goes through)
The answer is 1.94, I used a calculator, just letting u know