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Business, 25.12.2019 01:31 channyfilthy8735

Susan wishes to buy gasoline and have her car washed. she finds that if she buys 9 gallons of gasoline at $2 per gallon, the car wash costs $1.50,but if she buys 10 gallons of gasoline, the car wash is free. for susan, the marginal cost of the tenth gallon of gasoline is:
a. 50 cents.
b. $1.
c. zero.
d. $1.50.

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Susan wishes to buy gasoline and have her car washed. she finds that if she buys 9 gallons of gasoli...
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