Solve the problem. Round your answer to the nearest tenth, when appropriate.A ball is thrown downward from a window in a tall building. Its position at time t in seconds is given by 
, where s is in feet. How long will it take the ball to fall 
?
A. 2.6 sec
B. 1.4 sec
C. 1.6 sec
D. 2.4 sec
Answer: C
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Find the distance between P and Q and the coordinates of the midpoint of the segment joining P and Q.P(1, 2), Q(4, 5)
A. 6; 
B. 3
; 
C. 6; 
D. 3
; 
Solve the problem.The distance d in miles that can be seen on the surface of the ocean is given by 
where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to be to see a distance of 
A. 756 ft B. 130 ft C. 420 ft D. 114 ft
Solve the equation by first clearing the fractions.- 
+ z = 
A. 
B. {1}
C. 
D. {-1}
Solve the problem.In a lab experiment 2 grams of acid were produced in 32 minutes and 8 grams in 39 minutes. Let y be the grams produced in x minutes. Write an equation for grams produced.
A. 7y = 6x + 30 B. 7y = 6x - 178 C. 7y = 6x + 178 D. y = x + 30