Question

A water company charges a connection fee each month of $22 and an additional $2.30 per cubic foot of water used. Which function could be used to find the total monthly charges for x cubic feet of water used?

A) f(x) = 2.30x
B) f(x) = 2.30x + 22
C) f(x) = 22x + 2.30
D) f(x) = 2.30x − 22

Answer 1

Step-by-step explanation: b

Answer 2

Find out the total monthly charges for x cubic feet of water used .

To prove

As given

A water company charges a connection fee each month of $22 and an additional $2.30 per cubic foot of water used.

Than the equation become

Total monthly charges for x cubic feet of water used = Monthly connection fee + charges for x cubic feet of water

thus

f(x) = 22 + 2.30x

where x is the x cubic feet of water used .

Therefore Option (B) is correct i.e f(x) = 22 + 2.30x .