Solve the problem.A projectile is fired with an initial velocity of 550 feet per second at an angle of 45° with the horizontal. To the nearest foot, find the maximum altitude of the projectile. The parametric equations for the path of the projectile are x = (550 cos 45°)t, and y = (550 sin 45°)t - 16t2.
A. 2363 ft
B. 2346 ft
C. 2379 ft
D. 2355 ft
Answer: A
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with a standard deviation of 
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with a standard deviation of 
Find the z-score for each person. Relatively speaking, who did
better? A. 2.0, 3.0, Jeff B. 2.0, 3.0, Martin C. 0.83, 1.58, Martin D. 0.83, 1.58, Jeff
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A. 200,000 ? z ? 240,000 B. 210,000 ? z ? 250,000 C. 150,000 ? z ? 180,000 D. 150,000 ? z ? 200,000
Divide.
A. 15 B. 13 R7 C. 14 R40 D. 15 R3
Find the values of x for which the function is continuous.
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A. 
B. 
C. 
D. 