Solve the problem.A projectile is fired with an initial velocity of 600 feet per second at an angle of 70° with the horizontal. To the nearest 10 feet, find the horizontal distance covered by the projectile. The parametric equations for the path of the projectile are x = (600 cos 70°)t, and 
A. 7230 ft
B. 7470 ft
C. 7340 ft
D. 7090 ft
Answer: A
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Find 
by using logarithmic differentiation.y = 
A. 
B. 
C. 
D. 
Solve the problem.The value of a retirement savings account with an annual contribution of $600 (contributions made at the end of each year, including the last year), and an APR of 5.4% after 40 years is $79,960.27.Find the value of this retirement savings account after 52 years. Round your answer to the nearest cent.
A. $160,075.29 B. $165,660.72 C. $169,319.35 D. $151,304.82 E. $154,695.52
Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r = 4 cos ?
A. 
(x - 2)2 + y2 = 4; circle, radius 2,
center at (2, 0) in rectangular coordinates
B. 
x2 + (y + 2)2 = 4; circle, radius 2,
center at (0, -2) in rectangular coordinates
C. 
x2 + (y - 2)2 = 4; circle, radius 2,
center at (0, 2) in rectangular coordinates
D. 
(x + 2)2 + y2 = 4; circle, radius 2,
center at (-2, 0) in rectangular coordinates
Find an equation for the hyperbola described.Vertices at (0, ±8); asymptotes at y = ± 
x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1