Answer:
-21 r^5
Step-by-step explanation:
(7r) (-3r^4)
Multiply the coefficients
7*(-3)
-21
Multiply the variables
r * r^4 = r^(4+1) = r^5
-21 r^5
(3) the cost of cell phone service that charges a base amount plus
<span>20 cents per minute</span>
Answer:
20,000(x)^0.85 = 12,000
Step-by-step explanation:cd
if it "depreciates" over time, you take the value that it depreciates by and divide the full value of the car by that and get ^0.85, then, once you find the quotiont, you multiply that by the number of years it takes until you reach the goal. I have explained how to solve this problem, even gave the answer, but, I did not give the number of years, good luck! ;)
Answer:
40
Step-by-step explanation:
28+12= 40
if my answer helps please mark as brianliest.
