Use two equations in two variables to solve the following problem.Maria and Susan pool their resources to buy several lottery tickets. They win $700,000! They agree that Susan should get $50,000 more than Maria, because she gave most of the money. How much will Maria get?
A. $280,000
B. $275,000
C. $225,000
D. $325,000
E. $240,000
Answer: D
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Use the laws of exponents to simplify. Do not use negative exponents in your answer.
A. 3
B. 32
C. 
D. 2
Provide an appropriate response. Solve the given problem: A tank has two pipes entering it and one leaving it. Pipe 1 fills the tank in 4 minutes. Pipe 2 takes 9 minutes to fill the same tank. Pipe 3 empties the tank in 24 minutes. How much time does it take to fill the tank with all three pipes operating at the same time?
A. 0.04 min B. 3.13 min C. 2.77 min D. 3.27 min
Use a graphing calculator to solve the system by finding A-1 and A-1B. (Round to the nearest integer if necessary.)
A. {(5, -2, -5)} B. {(2, 5, 2)} C. {(6, 0, 5)} D. {(5, 2, 5)}
Solve the problem.Use the formula R = log 
+ B to find the intensity R on the Richter scale, given that amplitude a is 207 micrometers, time T between waves is 3.5 seconds, and B is 2.7. Round answer to one decimal place.
A. 1.8 B. 7 C. 4.5 D. 6.8