sarah work at a concession stand for 2 hours and erans 22.50$, but if she works for 4 hours she earns $45. what is the rate of change

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

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