Use a power-reducing identity to find the exact value of the expression.csc2 (75°)
A. 
B. 
C. 8 - 4
D. 4 - 2
Answer: C
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Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = 4x2 + 9y2; 0 ? x ? 1, 0 ? y ? 1
A. 
B. 
C. 
D. 
Write the best-fit linear model for the data.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters). Find a linear function that approximates a plant's growth as a function of temperature. 
A. y = 7.30 + 0.122x B. y = -14.6 - 0.211x C. y = 7.30 - 0.112x D. y = 14.6 + 0.211x
Solve the problem.A man rode a bicycle for 12 mi and then hiked an additional 8 mi. The total time for the trip was 5 hr. If his biking rate was 10 mph faster than his hiking rate, what was each rate?
A. Biking: 13 mph; hiking: 3 mph B. Biking: 11.5 mph; hiking: 1.5 mph C. Biking: 12 mph; hiking: 2 mph D. Biking: 14. mph; hiking: 4.5 mph
Add the polynomials.(4x2 - 4x - 1) + (6x2 - 4x + 4)
A. 10x4 - 8x2 + 3 B. 10x2 - 8x + 3 C. 24x2 - 4x + 3 D. 10x2 - 4x + 3