Solve the problem.The instantaneous growth rate of a population is the rate at which it is growing at every instant in time. The instantaneous growth rate r of a colony of bacteria t hours after the start of an experiment is given by the function 
for 
Find the times for which the instantaneous growth rate is zero.
A. 1 sec and 2 sec
B. 1 sec
C. 1 sec, 2 sec, and 4 sec
D. 2 sec and 4 sec
Answer: A
Mathematics
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Solve the problem.In Jameel's state, the sales tax rate is 1.75% for the city and 5% for the state. Find the total amount paid for 6 DVD players at $149 each.
A. $940.26 B. $954.35 C. $1497.45 D. $952.11
Mathematics
Find the vertices and graph the hyperbola.18y2 - x2 = 36
A. (0, -2), (0, 2)
B. (0, -
), (0, 
)
C. (-2, 0), (2, 0)
D. (-
, 0), (
, 0)
Mathematics
Find the cross product and determine whether the proportion is true or false.
= 
A. 164.25 = 110.25; true B. 110.25 ? 248.0625; false C. 165.375 = 165.375; true D. 165.375 ? 165.375; false
Mathematics
Solve the inequality graphically.
> 
A. (-5, -2) B. (2, 5) C. (-?, -5) ? (-2, ?) D. ?
Mathematics