10x=100 because tbh if you Calculate 5x-10=40 it’s give you your answer and go off of that.
The multiplier for decreasing by 45% is 0.55
So you times the multiplier by the price to get your answer:
650 x 0.55 = $357.50
To find f(-20), first figure out which piece x = -20 fits with.
Since -20 < -12, x = -20 first in the domain used by the third piece.
For f(-20), treat this function as if it was just f(x) = 3x-7.
f(-20) = 3(-20) -7
= -60 - 7
= -67
Answer:
It cost $42 to rent a chain saw for 12 hours.
Step-by-step explanation:
Plug in 12 for h.
c = 3(12) + 6
c = 36 + 6
c = 42
