Find a value for the constant a so that f(x) = ax2 models the data. 
A. a = 3
B. a = 0.1
C. a = 0.3
D. a = 1
Answer: B
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Solve the equation in the interval [0°, 360°). Give solutions to the nearest tenth, if necessary.2 cos3? = cos ?
A. {45°, 135°, 225°, 315°} B. {90°, 270°} C. {45°, 90°, 135°, 225°, 270°, 315°} D. ?
Factor completely using the trial and error method to factor trinomials. If unfactorable, indicate that the polynomial is prime.15x2y2 + 26xy2 + 8y2
A. (5x + 4y)(3x + 2y) B. y2(3x + 4)(5x + 2) C. (3x + 4y)(5x + 2y) D. y2(x + 4)(15x + 2)
Find the indicated term of the sequence.The ninth term of the arithmetic sequence 0, 11, 22, ...
A. 110 B. 88 C. 99 D. 80
Solve the problem.The weekly profit, P, of a house cleaning service can be approximated by the formula 
, where h is the number of houses cleaned each week.i) Draw a graph of profit in terms of houses cleaned for up to and including 500 houses.ii) Estimate the weekly profit if 400 houses are cleaned.iii) Estimate the number of houses cleaned if the week's profit is $27,640.
What will be an ideal response?