Find the product.4(5 + 2s)
A. 20 + 2s
B. 5 + 8s
C. 20 + 40s
D. 20 + 8s
Answer: D
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Solve the equation after making an appropriate substitution.2
2 + 
+ 2 = 0
A. 
B. 
C. 
D. 
Write an algebraic expression to answer the question and simplify.A stack of currency contains 60 bills. In the stack are x $20 bills. The rest are $50 bills. How much money is in the stack of bills?
A. 20x + 50(60 - x); -30x + 3000 dollars B. 20x - 50(60 - x); 70x - 3000 dollars C. 20x + 50(60 - x); 30x + 3000 dollars D. Cannot be solved
Solve the system of equations.x + 5y + 3z = 31 5y + 3z = 29 z = 3
A. No solution B. (2, 4, 3) C. (2, 3, 4) D. (3, 4, 2)
Solve the problem.Stevie bought a stereo for $230 and put it on sale at his store at a 60% markup rate. What was the retail price of the stereo? Round to the nearest cent if necessary.
A. $368.00 B. $268.00 C. $330.00 D. $460.00