Solve the problem.A racetrack curve is banked so that the outside of the curve is slightly elevated or inclined above the inside of the curve. This inclination is called the elevation of the track. The maximum speed on the track in miles per hour is given by
where r is the radius of the track in miles and ? is the elevation in degrees. Find the maximum speed for a racetrack with an elevation of 28° and a radius of 
Round to the nearest mile per hour.
A. 198 mi/hr
B. 175 mi/hr
C. 39,350 mi/hr
D. 13,526 mi/hr
Answer: B
Mathematics
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Find the total area of the region between the curve and the x-axis.y = 
; 1 ? x ? 3
A. 
B. 3
C. 
D. 
Mathematics
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.(logax - logay) + 5logaz
A. loga
B. loga
C. logaxz5y
D. loga
Mathematics
Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 2x + 12y + 33 = 0
A. (h, k) = (1, 6); r = 2
B. (h, k) = (-1, -6); r = 2
C. (h, k) = (-1, 6); r = 2
D. (h, k) = (1, -6); r = 2
Mathematics
11 L is the measure of __________ (capacity, distance, weight, temperature).
Fill in the blank(s) with the appropriate word(s).
Mathematics