Solve the problem.The formula 
can be used to estimate the maximum safe velocity v, in miles per hour, at which a car can travel along a curved road with a radius of curvature r, in feet. To the nearest whole number, find the radius of curvature if the maximum safe velocity is 15 miles per hour.
A. 225 ft
B. 36 ft
C. 90 ft
D. 563 ft
Answer: C
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Find the product, if possible.
A. 
B. 
C. 
D. 
Factor completely. If the polynomial cannot be factored, write "prime."p6 + q24r18
A. (p + q4r3)(p - q4r3)(p4 - p2q8r6 + q16r12) B. (p2 + q8r6)(p4 - p2q8r6 + q16r12) C. (p + q4r3)(p - q4r3)(p2 + pq4r3 + q8r6)(p2 - q4r3 + q8r6) D. (p3 + q12r9)(p3 - q12r9)
Solve the problem.A semicircular window of radius 20 inches is to be laminated with a coating that costs $1.10 per square inch to apply. What is the total cost of coating the window, to the nearest cent? (Use ? ? 3.14).
A. $4338.22 B. $345.40 C. $138.16 D. $690.80
Use the quadratic formula to find the roots of the equation. Find a decimal approximation to the nearest thousandth.x2 + 5x - 5 = 0
A. x = -5.854 B. x = -5.854, x = 0.854 C. x = -11.708, x = 1.708 D. x = 5.854