Use a graphing calculator to plot the data and find the quadratic function of best fit.A rock is dropped from a tall building and its distance (in feet) below the point of release is recorded as accurately as possible at various times after the moment of release. The results are shown in the table. Find the regression equation of the best model. Round values to the nearest thousandth. 
A. y = -3.400x2 + 2.936x + 15.536
B. y = 3.400x2 + 2.936x + 15.536
C. y = 15.536x2 + 2.936x - 3.400
D. y = 15.536x2 + 2.936x + 3.400
Answer: C
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Solve.A construction company incurred the following expenses on a job: gravel, $92.48; sand, $51.43; cement, $202.29; bricks, $240.82; and labor, $658.35. If the company charged $1600 for the job, what was the profit?
Fill in the blank(s) with the appropriate word(s).
Find all numbers for which the rational expression is not defined.
A. None B. d = -2 C. d = 2 D. d = 2, 6
Determine whether there is a maximum or minimum value for the given function, and find that value.f(x) = -2x2 + 5x + 8
A. Minimum: -5
B. Maximum: 0
C. Maximum: 
D. Maximum: 
Write a numerical expression for the phrase and simplify it.9 subtracted from the product of -9.3 and 8.2
A. (-9.3)(8.2) - 9; -85.26 B. [9 + (-9.3)](8.2); -2.46 C. (9)(-9.3)(8.2); -686.34 D. 9 - (-9.3)(8.2); 85.26