Solve the problem.A radio telescope has a parabolic surface. If it is 1 m deep and 
wide, how far is the focus from the vertex?A = 16 mB = 1 m
A. 16 m
B. 4 m
C. 1 m
D. 64 m
Answer: A
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Replace the ? with the appropriate symbol, + or -, to describe an increase or a decrease.The Dow Jones Industrial Average gains 17 points. 
17 points.
A. + B. -
Solve.Suppose that a polynomial function is used to model the data shown in the graph below.
For what intervals is the function decreasing?
A. 10 through 30 B. 10 through 20 and 30 through 50 C. 0 through 30 D. 0 through 10 and 30 through 50
Represent the quantity by an integer.$115 loss
A. 115 B. -115
The following comparison line graph indicates the number of vehicles sold for a seven week period by two different salespeople. Use the graph to answer the question.
During what weeks did Chris sell more vehicles than Pat?
A. Weeks 5, 6, 7 B. Weeks 1, 2, 3, 4 C. Weeks 1, 2, 3 D. Weeks 1, 3, 4