Solve.While traveling in a car, the centrifugal force a passenger experiences as the car drives in a circle varies jointly as the mass of the passenger and the square of the speed of the car. If the a passenger experiences a force of 64.8 newtons when the car is moving at a speed of 30 kilometers per hour and the passenger has a mass of 80 kilograms, find the force a passenger experiences when the car is moving at 30 kilometers per hour and the passenger has a mass of 50 kilograms.
A. 36 newtons
B. 45 newtons
C. 54 newtons
D. 40.5 newtons
Answer: D
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A tricycle has a large wheel in front, with radius 18", and a small wheel in back, with radius 6". If the large wheel makes 3 revolutions, how many revolutions does the small wheel make?? ?
A. ?3 B. ?6 C. ?9 D. ?24 E. ?18
Simplify the expression. If necessary, express the result that is not a rational number as a decimal rounded to two decimal places.
A. 26
B. 
C. 5
D. not a real number
Fill in each blank with one of the words or phrases listed below. Some choices may be used more than once and some may not be used at all.
The graph of y = x2 is called a(n) 
.
A. parabola B. quadratic C. vertex D. square root
Find a polynomial of least degree with only real coefficients and having the given zeros. -
, 
, and -7i
A. f(x) = x4 - 43x2 - 294 B. f(x) = x4 + 86x2 + 294 C. f(x) = x4 + 43x2 - 294 D. f(x) = x4 - 86x2 + 294