Option C is correct or y=3/4x-5. Use the given functions to set up and simplify y=mx+b
to find the equation.
Answer:

Step-by-step explanation:

Expand the brackets.

Add -9x and 5x

Add 4x and 6x on both sides.

Add the like terms.

Divide 12 into both sides.


Answer:
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Step-by-step explanation:
......
Mary = (1/3)x
Erin = x - 8
John = x
Here is your equation:
(1/3)x + (x - 8) + x = 267
Take it from here.
The answer to the question is C.