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 30° and a radius of 
Round to the nearest mile per hour.
A. 178 mph
B. -180,960 mph
C. 40,799 mph
D. 203 mph
Answer: A
Mathematics
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Multiply.6(-6)(8)
A. 288 B. -28 C. -288 D. 8
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Use an identity to write the expression as a single trigonometric function or as a single number.sin 22.5° cos 22.5°
A. 
B. 
C. 
D. 
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Solve.Bill took 0.792 minutes longer than Bob to run a marathon. Write this decimal as a fraction.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Suppose the number of Quickie hamburgers (in millions) served yearly can be modeled by 
Approximate how many years it takes for the number of hamburgers served to reach 54 million. Round to the nearest year.
A. 1 yr B. 4 yr C. 3 yr D. 2 yr
Mathematics