Simplify.
A. - 
B. - 
C. - 
D. - 
Answer: C
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Solve the problem.Translate into the language of a derivative of distance with respect to time. s is the position of the car at time t. The speed of the car is porportional to the distance it has traveled.
A. 
= kt, k is a constant
B. 
= ks, k is a constant
C. 
= k, k is a constant
D. 
= ks, k is a constant
As part of a statistics project, a 6th grade teacher brings to class a container with 200 red marbles and 800 white marbles which are thoroughly mixed. To figure out how many marbles in the container are red without actually counting them all, a student randomly draws 150 marbles from the container. Of the 150 marbles drawn, 33 are red.The sampling proportion is
A. 15%. B. 25%. C. 75%. D. 22%. E. none of these
Combine into a single logarithm.  figure 1.png)
What will be an ideal response?
Find the sum Sn of the first n terms of the geometric sequence. 
, 
, 
, . . . ; n = 5
A. 
B. 4
C. 20
D. 