A power company calculates a person's monthly bill from the number of kilowatt-hours (kWh), x, used.
The function b(x) = {
0.15%,
0.10 (20 – 400) + 60,
2 < 400
2 > 400
determines
the bill.
How much is the bill for a person who uses 600 kWh in a month?
O A. $80
B. $90
C. $100
O D. $110

(a)

Step-by-step explanation:

Given

The function is given for the bill as per the kilo-watt hours used

for 600 kWh in a month,  is

Substitute 600 for  in

Therefore, the bill for a person is

e.

step-by-step explanation:

because there are always 10 numbers in a phone number.

c. (3,2,6) is the answer.