Solve.A baseball player hit a baseball with an initial speed of 160 feet per second at an angle of 40° to the horizontal. The ball was hit at a height of 4 feet off the ground. Find parametric equations that describe the motion of the ball as a function of time. How long is the ball in the air? When is the ball at its maximum height? What is the distance the ball traveled?
A. x = 114.9t and y = -16t2 + 96.45t + 3
5.997 sec, 3.014 sec,
689.055 feet
B. x = 114.9t and y = -16t2 + 96.45t + 3
6.059 sec, 3.014 sec,
1171.774 feet
C. x = 122.56t and y = -16t2 + 102.88t + 4
12.937 sec, 3.215 sec,
1,585.559 feet
D. x = 122.56t and y = -16t2 + 102.88t + 4
6.469 sec, 3.215 sec,
792.841 feet
Answer: D
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Simplify and then, if appropriate, write in radical notation. x1/7 ? x6/7
A. 
B. 
C. x
D. 
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= 2
A. {-9} B. {5, 9} C. ? D. {-5, 9}
Find a set of parametric equations for the line through the point and parallel to the specified vector or line. (For each line, write the direction numbers as integers.)
?
Point: 
Parallel to: 
?
A. Parametric equations: 
B. Parametric equations: 
C. Parametric equations: 
D. Parametric equations: 
E. Parametric equations: 