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. 13,526 mph
B. 39,350 mph
C. 198 mph
D. 175 mph
Answer: D
Mathematics
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Find the limit.
A. 1
B. 
C. -1
D. No limit
Mathematics
Find the coordinates of the labeled points.
A. A(-5, 0); B(-1, -5) B. A(-5, 0); B(1, -5) C. A(-5, 5); B(1, -5) D. A(5, 0); B(1, -5)
Mathematics
Subtract.-8.4 - 2.2
A. -6.2 B. 10.6 C. -10.6 D. 6.2
Mathematics
Translate the phrase into a mathematical expression and then find the result.446 feet fewer than 1099 feet
A. 446 + 1099; 1545 feet B. 1099 - 446; 553 feet C. 446 + 1099; 1445 feet D. 1099 - 446; 653 feet
Mathematics