Use a half-angle formula to find the exact value of the expression.sin 165°
A. 
B. - 
C. - 
D. 
Answer: D
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Find the point(s) at which the given function equals its average value on the given interval.f(x) = 
; [0, 24]
A. 
B. 
C. 
D. 
Solve the problem using the quadratic formula.For a car traveling at x mph, stopping distance is estimated by the formula 
Find a (maximum) safe speed for a stopping distance of 670 ft. Round your answer to the nearest mph.
A. 75 mph B. 72 mph C. 63 mph D. 67 mph
Solve the problem.The cost of owning a home includes both fixed costs and variable utility costs. Assume that it costs $2098 per month for mortgage and insurance payments and it costs an average of $2.87 per unit for natural gas, electricity, and water usage. (i) Determine a linear function that computes the annual cost of owning this home if x utility units are used. (ii) What does the y-intercept on the graph of the function represent?
A. y = -2.87x + 2098; y-intercept, 2098, represents the minimum cost of owning the home without spending anything on utilities. B. y = 2.87x + 2098; y-intercept, 2098, represents the minimum cost of owning the home without spending anything on utilities. C. y = 2.87x + 25,176; y-intercept, 25,176, represents the minimum cost of owning the home for 12 months without spending anything on utilities. D. y = -2.87x + 25,176; y-intercept, 25,176, represents the minimum cost of owning the home for 12 months without spending anything on utilities.
Solve the equation.
+ 3 = 8
A. {121} B. {25} C. ? D. {61}