Evaluate the polynomial.-4x3 - 6x2 - 19for x = -3
A. 107
B. 23
C. 25
D. 35
Answer: D
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Work the application. Write a legend and an equation. Solve the equation and answer in a complete sentence.Each box of matches contains 120 matches. Boxes of matches are shipped in cartons. Each carton contains 15 boxes of matches. How many matches are in each carton?
A. Let n = number of matches in each carton. 15 ? n = 120 Each carton contains 135 matches. B. Let n = number of matches in each carton. 120 ? 15 = n Each carton contains 180 matches. C. Let n = number of matches in each carton. 15 ? n = 120 Each carton contains 8 matches. D. Let n = number of matches in each carton. 120 ? 15 = n Each carton contains 1800 matches.
Solve the problem.Two pipes together can fill a large tank in 10 hr. One of the pipes, used alone, takes 15 hr longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
A. 12.5 hr; 27.5 hr B. 25 hr; 40 hr C. 10 hr; 25 hr D. 15 hr; 30 hr
Graph the solution of the system.
A. 
B. 
C. 
D. 
Indicate what must be done to each side of the equation in order to isolate the variable.- 
x = 5
A. Multiply by 2
B. Multiply by - 2
C. Multiply by 
D. Divide by 5