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. before 
sec or after 
sec
B. before 
sec
C. after 
sec
D. between 
and 
sec
Answer: D
Mathematics
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Find the sum of the finite geometric series using a formula.2 - 8 + 32 - 128 + 512
A. 682 B. 410 C. -682 D. -410
Mathematics
Find the present value to the nearest cent.Joshua obtained a loan of $7900 for 360 days at 12%. If the value of money is 8.4%, find the present value in 278 days.
A. $7977.61 B. $8681.89 C. $8076.78 D. $7961.97
Mathematics
Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.(5xy)-4/7
A. -(5xy)4/7
B. 
C. (5xy)7/4
D. 
Mathematics
Solve the equation.3
= 
A. ? B. {6} C. {18} D. {3}
Mathematics