Question

Matrix M shows the one-way fares for four commuter train routes. If the rail service raised fares by 12% on all routes and days, which formula shows how to find the matrix that would display the new fares?

A) 0.12M

B) M + 0.12

C) M + 0.12M

D) 1 + 0.12M

Answer 1

Answer: C)
`M+0.12M`

Explanation:

Given : Matrix M shows the one-way fares for four commuter train routes.

If the rail service raised fares by 12% on all routes and days.

Then, the proportion of service raised fares on all routes and days. =0.12

Then, the new fares is given by :-

`M+0.12M`

Hence, the formula shows how to find the matrix that would display the new fares =
`M+0.12M`

Answer 2

C) M + 0.12M

Explanation:

A — calculates the raise, not the new fare

B — adds 12¢ to every fare

C — adds 12% of the current fare to the current fare. This is what you want.

D — adds $1 to the amount of the raise. This is not the amount of the new fare.