Please help! Mika’s gym allows her to bring 3 guests for free. After the first three, she must pay $7 per guest. How many guests, g, can she bring to the gym if she pays $42? Three of these equations give the correct value of g. Which equation does NOT? a)7g=63 b)7g-3=42 c)7(g-3)=42 d)g=9

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Please help! Mika’s gym allows her to bring 3 guests for free. After the first three, she must pay $7 per guest. How many guests, g, can she bring to the gym if she pays $42? Three of these equations give the correct value of g. Which equation does NOT? a)7g=63 b)7g-3=42 c)7(g-3)=42 d)g=9

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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am i allowed to just give the answer as i explain it?
Sure, that's fine
okay, so we take d, and say g = 9. multiply 9 by 7. this equals 63. if you subtract three at this point, your final answer would be 60 instead of 42 like it should be. therefore, b is the correct answer by being the incorrect equation

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make sense?
oh, yes that does make sense, thank you
my pleasure.

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