Question

Karina solves the system using linear combination and arrives at the equation 116y = 96.28. She then solves this equation for y. Which statement explains Karina’s solution?

a. The cost of electricity is $0.17 per unit.
B. The cost of natural gas is $0.20 per unit.
C. The cost of electricity is $0.72 per unit.
D. The cost of natural gas is $0.83 per unit.

Answer 1

Correct answer is D the cost of natural gas is $0.83 per unit.

Answer 2

The correct option is D. The cost of natural gas is $0.83 per unit.

Explanation:

Consider the provided equation.

`116y = 96.28`

We need to solve the above equation for y.

Divide both the sides by 116.

`(116y)/(116) = (96.28)/(116)`

`y=0.83`

Now consider the provided options.

Hence, the correct option is D. The cost of natural gas is $0.83 per unit.