Solve the problem.A projectile is fired with an initial velocity of 400 feet per second at an angle of 70° with the horizontal. To the nearest foot, find the maximum altitude of the projectile.
A. 2191 ft
B. 2200 ft
C. 2208 ft
D. 2224 ft
Answer: C
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Solve the problem.As a safety precaution, emergency workers evacuated residents within a 5 mile radius of a chemical spill. The evacuated area can be represented by the inequality x2 + y2 ? 25. Graph this inequality. 
A. 
B. 
C. 
D. 
Find the derivative of y with respect to the appropriate variable.y = (1 - 3t) coth-1 
A. 
- 3 coth-1 
B. 
- 3 tanh-1 
C. (1 - 3t) coth-1 
D. - 
t
Solve the problem.A grocer sold 39 melons for $1.08 each. What was the total amount of the sale?
A. $42.12 B. $43.22 C. $42.22 D. $42.13
Solve the problem.A hot dog stand sells hot dogs with cheese, relish, chili, tomato, onion, mustard, or ketchup. How many different hot dogs can be concocted using any 5 of the extras?
A. 1260 B. 21 C. 2520 D. 42