Solve the problem.A convenience store employee is counting $10 and $20 bills. If there are four times as many  as  and the total amount is $1560, find the number of each type of bill.

A. 26 $20 bills; 104 $10 bills
B. 26 $20 bills; 4 $10 bills
C. 104 $20 bills; 26 $10 bills
D. 104 $20 bills; 4 $10 bills


Answer: A

Mathematics

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The function represents the rate of flow of money in dollars per year. Assume a 10-year period and find the accumulated amount of money flow at t = 10.f(x) = 500 at 4% compounded continuously

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Find the partial derivative.Let z = f(x, y) = (x + y)4. Find .

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