sweetbe19
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your family needs to rent a car for a week while on vacation. company B charges $3 per mile plus a flat fee of $150 per week. company D charges $4 per mile plus a flat fee of $75 per week

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apologiabiology
I'm assuming, find how many miles to drive before both companies are equal

1 week total so

B=3m+150
D=4m+75

find when equal
150+3m=4m+75
minus 3m both sides
150=m+75
minus 75 both sides
75=m

must drive 75miles before cost of both companies are equal

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