Answer:
42 dollars
Step-by-step explanation:
f(5) means to replace the x in the equation with 5.
f(5) = 8(5) - 3
f(5) = 40 - 3
f(5) = 37
f(x) = 2x + 5
f(-6)= 2(-6) + 5 = -12 + 5 = -7