A rectangle has perimeter 14 m. Express the area of the rectangle as a function A(I) of the length I of one of its sides.
What will be an ideal response?
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Find the derivative of the function.
Use a graphing calculator to graph the hyperbola.3.8x2 - 8y2 = 13
A. y = ±
B. y = ±
C. y = ±3.8
D. y = ±
Solve the problem.A health shop owner made trail mix containing dried fruit, nuts, and carob chips. The dried fruit sells for $5.50 per pound, the nuts sell for $7.50 per pound, and the carob chips sell for $8.50 per pound. The shop owner mixed 50 pounds of the trail mix and sells it for $6.70 per pound. If the amount of nuts is five pounds more than the amount of carob ships, how much of each item was used for the trail mix?
What will be an ideal response?
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