The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.s = 6t2 + 3t + 7, 0 ? t ? 2Find the body's displacement and average velocity for the given time interval.
A. 30 m, 15 m/sec
B. 30 m, 30 m/sec
C. 44 m, 22 m/sec
D. 18 m, 27 m/sec
Answer: A
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Convert the angle to degrees, minutes, and seconds; or to decimal degrees (and round your result to the nearest hundredth of a degree).91.57°
A. 91°34'18'' B. 91°34'57'' C. 91°34'12'' D. 91°34'0''
In electrical circuits, the impedance Z (or opposition to the flow of electricity), voltage V, and current I can all be represented by complex numbers. They are related by the equation Z = 
. Use this equation to find the value of the missing variable.V = 56 - 42i, I = 4 + 2i
A. Z = 4 + 26i B. Z = 4 - 26i C. Z = 7 - 14i D. Z = 7 + 14i
On the basis of data collected during an experiment, a biologist found that the growth of the fruit fly (Drosophila) with a limited food supply could be approximated by the exponential model 
where t denotes the number of days since the beginning of the experiment.
?
How fast was the population changing on the 20th day?
?
A. 18 flies/day B. 15 flies/day C. 14 flies/day D. 17 flies/day E. 16 flies/day
Write the interval as an inequality involving x. Graph the inequality.(-3, 1]
A. -3 ? x < 1
B. -3 < x ? 1
C. -3 < x < 1
D. -3 ? x ? 1