Solve the problem.As part of a physics experiment, Ming drops a baseball from the top of a 350-foot building. To the nearest tenth of a second, for how many seconds will the baseball fall? (Hint: Use the formula h = 16t2, which gives the distance h, in feet, that a free-falling object travels in t seconds.)
A. 4.7 sec
B. 21.9 sec
C. 1.2 sec
D. 87.5 sec
Answer: A
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Answer the questionWhat type of variation is suggested by the graph?
A. y varies directly as the square of x B. y varies inversely as x C. y varies inversely as the square of x D. y varies directly as x
Determine whether or not the equation is linear. If necessary, complete a table to help decide. If the equation is linear, identify the slope and the y-intercept.y = 
A. linear;
slope: 0
y-intercept: (0, 3)
B. linear;
slope: -
y-intercept: (0, 0)
C. not linear
D. linear;
slope: 1
y-intercept: (0, 3)
Use the distributive property to write the expression without parentheses. Then simplify if possible.7(3z + 6) - 4
A. 21z + 2 B. 21z + 14 C. 21z + 38 D. 10z + 9
Find the centroid of the region bounded by the given curves. 
a. 29/75, 93/105 b. 28/75, 92/105 c. 92/105, 9/75 d. 93/75, 29/105 e. None of these