Please help (click to veiw photo)

Mathematics

1 answer:

Arturiano [62]2 years ago

5 0

M - n
m = 300x + 100, so we substitute that into the equation for m.
300x + 100 - n
n = 250x + 200, so we substitute that into the equation for n.
300x + 100 - 250x - 200
Subtract the 250x to get:
50x + 100 - 200
Subtract the 200 to get:
50x - 100, which is option D.
Hope this helps!

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See attachment for math work and answer.