Shannon drove 500 miles. which expression shows the miles per gallon obtained by her car if she used g gallons of gas on the trip?
a.) 500 - g
b.) 500 ÷ g
c.) 500 × g
d.) 500 + g

whats the question?

step-by-step explanation:

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

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step-by-step explanation:

mark brainliest!