Solve the problem.A flare fired from the bottom of a gorge is visible only when the flare is above the rim. If it is fired with an initial velocity of 112 ft/sec and the gorge is 160 ft deep, during what interval can the flare be seen? 
A. 6 sec < t < 9 sec
B. 0 sec < t < 2 sec
C. 4 sec < t < 7 sec
D. 2 sec < t < 5 sec
Answer: D
Mathematics
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Express the integrand as a sum of partial fractions and evaluate the integral.
A. - 
+ 5ln
+ 3ln
+ C
B. -8 ln 
+ 5ln
+ C
C. -3 ln 
+ 5ln
- 3ln
+ C
D. -8 ln 
+ 5ln
+ 3ln
+ C
Mathematics
Find the indicated root and express the answer in standard form.Cube roots of 8
A. 2, 1 + i
, -1 - i
B. 2, -1 - i
, 1 - i
C. 2, 1 + i
, 1 - i
D. 2, -1 + i
, -1 - i
Mathematics
Find the mode(s) for the given sample data.5, 9, 59, 3, 2, 8, 42, 1, 4, 16
A. 14.3 B. No mode C. 9 D. 8
Mathematics
Write the inequality using interval notation, and illustrate the inequality using the real number line.2 < x < 9
A. [2, 9]
B. [2, 9)
C. (2, 9)
D. (2, 9)
Mathematics