Perform the indicated operation. Assume that all variables represent nonnegative real numbers.
+ 5x
+ 3x
A. 2x2
+ 20x
B. 22x
C. 22
D. 84x
Answer: B
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Simplify. Express your answer with positive exponents. Assume that all variables are nonzero.
-2
A. 
B. 
C. 
D. 
Solve the problem.Two points A and B are on opposite sides of a building. A surveyor selects a third point C to place a transit. Point C is 54 feet from point A and 72 feet from point B. The angle ACB is 60°. How far apart are points A and B?
A. 109.5 feet B. 100.2 feet C. 64.9 feet D. 78.5 feet
Solve the given equation for the indicated variable.A = 
bh for h
A. h = 
B. h = 
C. h = 
D. h = 
Solve.For three days in a row, volunteers picked up trash on a particular beach. They picked up a total of 762 pounds. On the second day they collected 39 pounds more than on the first day. On the third day, they picked up 12 pounds less than on the first day. How many pounds of trash did they pick up on the first day?
A. 633 pounds B. 271 pounds C. 263 pounds D. 245 pounds