Solve.An arrow is fired straight up from the ground with an initial velocity of 
per second. Its height, 
in feet at any time t is given by the function 
Find the interval of time for which the height of the arrow is greater than 
A. after 
sec
B. before 
sec or after 
sec
C. before 
sec
D. between 
and 
sec
Answer: D
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Solve the problem.The positions of two particles on the s-axis are s1 = sin t and 
with s1 and s2 in meters and t in seconds.At what time(s) in the interval 0 ? t ? 2? do the particles meet?
A. t = 
? sec and t = 
? sec
B. t = 
? sec and t = 
? sec
C. t = ? sec and t = 2? sec
D. t = 
? sec and t = 
? sec
Solve the problem. Round to the nearest cent unless otherwise noted.Find the monthly payment required to accumulate $400,000 in 15 years at an APR of 8% compounded monthly for an annuity.
A. $1155.94 B. $770.84 C. $1004.96 D. $878.23
Simplify.
A. 
B. 
C. 
D. None of these
Determine if the ordered pair is a solution of the equation. Remember to use alphabetical order for substitution.(4, 4); 5x + 2y = 28
A. No B. Yes