Use a percent equation to solve the percent problem.A chemical solution contains 8% calcium. How much calcium is in 
of solution?
A. 5 mL
B. 3.2 mL
C. 0.32 mL
D. 50 mL
Answer: C
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True or false?(A ? B) ? C = A ? (B ? C)
A. True B. False
Use Descartes' Rule of Signs and the Rational Zeros Theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers. f(x) = 3x3 + 8x2 - 5x + 6
A. -3, 
, 1; f(x) = (3x - 2)(x - 1)(x + 3)
B. 1, 
, -3; f(x) = (3x - 2)(x - 1)(x + 3)
C. -1, 
, -3; f(x) = (3x - 2)(x - 3)(x + 1)
D. -1, 
, 3; f(x) = (3x - 2)(x - 3)(x + 1)
Solve the problem.Police use the formula s = 
to estimate the speed s of a car in miles per hour, where d is the distance in feet that the car skidded and f is the coefficient of friction. If the coefficient of friction on a certain gravel road is 0.27 and a car skidded 300 feet, find the speed of the car, to the nearest mile per hour.
A. 49 mph B. 95 mph C. 2430 mph D. 270 mph
Use a calculator to solve the equation on the interval [0, 2?). Round the answer to two decimal places.sin x = 0.39
A. 0.40, 1.97 B. 0.40, 5.88 C. 0.40, 2.74 D. 0.40, 3.54