Simplify. Assume that all variables represent positive real numbers.
A. x
B. 5x
C. 5x
D. 5x
Answer: B
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Use a system of equations to solve problem.Suppose that the position of a particle moving along a straight line is given by 
where t is time in seconds and a, b, and c are real numbers. If s(0) = 0.5, s(1) = 0.95, and s(2) = 1.8, find a, b, and c. Then find s(5).
A. a = -0.2, b = 0.25, c = 0.5; s(5) = 6.75 B. a = 0.2, b = 0.25, c = 0.5; s(5) = 6.75 C. a = 0.2, b = -0.25, c = 0.5; s(5) = 6.75 D. a = 0.2, b = 0.25, c = -0.5; s(5) = 6.75
Simplify. Assume that all variables represent positive real numbers.
A. 81a
B. 3
C. 3a2
D. 3a
The polar coordinates of a point are given. Find the rectangular coordinates of the point.(4, 70°) Round the rectangular coordinates to two decimal places.
A. (1.59, 4.01) B. (1.37, 3.76) C. (4.01, 1.59) D. (3.76, 1.37)
Solve.The diagonal of a Persian rug measures 26 ft. The area of the rug is 240 ft2. Find the dimensions of the rug.
A. 24 ft by 10 ft B. 16 ft by 15 ft C. 20 ft by 12 ft D. 120 ft by 120 ft