Solve the inequality graphically.x2 + 8 ? -4x
A. (-?, -4)
B. (8, ?)
C. No solution
D. (-?, ?)
Answer: C
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Find the range of the given function. Express your answer in interval notation.f(x) = -2x2 + 12x - 23
A. [5, ?) B. (-?, -5] C. [-3, ?) D. (-?, -3]
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 90 newtons when the car is moving at a speed of 50 kilometers per hour and the passenger has a mass of 40 kilograms, find the force a passenger experiences when the car is moving at 30 kilometers per hour and the passenger has a mass of 90 kilograms.
A. 90 newtons B. 64.8 newtons C. 81 newtons D. 72.9 newtons
Find the root. Assume that all variables represent positive numbers.
A. 7x6 B. 7x2 C. 7x3 D. 49x3
Solve the problem.If a population has a growth rate of 6% per year, how long to the nearest tenth of a year will it take the population to double?
A. 1.2 years B. 11.6 years C. 12.3 years D. 0.1 years