Solve the problem.The recipe for a chocolate chip cake calls for 
pound of chocolate chips. If a bakery wants to make 20 cakes, how many pounds of chocolate chips will they need?
A. 20 pounds
B. 5 pounds
C. 16 pounds
D. 4 pounds
Answer: C
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Solve the problem.As a safety precaution, emergency workers evacuated residents within a 5 mile radius of a chemical spill. The evacuated area can be represented by the inequality x2 + y2 ? 25. Graph this inequality. 
A. 
B. 
C. 
D. 
Graph the circle.x2 + y2 - 2x - 10y + 1 = 0
A. 
B. 
C. 
D. 
Solve the problem.As one approaches a certain sound source, the sound intensity in arbitrary units increases according to the following function of time: F(x) = - 
. Starting at x = 0, when the source of sound is first sensed, how much time elapses until maximum sound intensity is felt? Round the result to the nearest hundredth.
A. 2.07 sec B. 26.07 sec C. 14.77 sec D. 0.36 sec
Solve the system using Cramer's Rule. If D = 0, use another method to complete the solution. x - 3y = 78x - 2y = 56
A. {(8, 7)} B. {(8, -1)} C. ? D. {(7, 0)}