The pair of triangles is similar. Find the missing length.
A. 1.6
B. 0.4
C. 4
D. 0.1
Answer: B
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Solve the problem.On an architect's blueprint, 1 inch corresponds to 8 feet. Find the length of a wall represented by a line 
inches long on the blueprint. Round to the nearest tenth, if necessary.
A. 50 ft B. 8.8 ft C. 78.1 ft D. 12.8 ft
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
Find the median of the set of data.65, 65, 237, 288, 356, 359
A. 262.5 B. 288 C. 237 D. 195.5
Solve the problem.The future value of a simple interest investment is given by S = P(1 + rt), where P is the principal invested at a simple interest rate r for t years. What principal P must be invested for 
at the simple interest rate 
so that the future value grows to $3600.
A. $3503.65 B. $3472.67 C. $127.33 D. $3243.24