Write the equation of the quadratic function whose graph is a parabola containing the given points.An egg is thrown upward from the top of a 128-foot-high building. The ball is 224 feet above ground level after 1 second, and it reaches ground level in 8 seconds. The height above the ground is a quadratic function of the time after the ball is thrown. Write the equation of this function.
A. y = -16x2 + 112x + 128
B. y = -16x2 + 56x + 128
C. y = -16x2 + 144x + 128
D. y = -16x2 + 16x + 128
Answer: A
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Answer the question(s) based on the following situation: Over the last 80 years records have been kept of the annual rainfall in the Tasmanian desert. The distribution of annual rainfall is approximately normal and has no outliers. The minimum of 2.5 inches of rain occurred in 1959; the maximum of 9.7 inches of rain occurred in 1938.The standard deviation of the rainfall distribution is approximately
A. 2.7 inches. B. 1.2 inches. C. 1.8 inches. D. 3.6 inches. E. none of these
Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set.-3x - 7y - 6z = -65 5x + 9y - 5z = 43 9x - 9y + 8z = 95
A. {(10, 0, 4)} B. {(2, 4, 2)} C. {(9, -2, -4)} D. {(9, 2, 4)}
Provide an appropriate response.For the production function P = 5.4l0.741k0.517, find the marginal productivity functions 
and 
.
What will be an ideal response?
Factor the polynomial as the difference of two squares or state that it is irreducible.36x4 - 49
A. (6x2 + 7)2 B. (6x2 + 7)(6x2 - 7) C. (6x2 - 7)2 D. (36x2 + 1)(x2 - 49)