Find the indicated sum or difference, if it is defined.Compute the sum of A =
and B = 
.
A. 
B. 
C. 
D. 
Answer: B
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Write the interval as an inequality involving x, and illustrate the inequality using the real number line.[-4, 9]
A. -4 < x ? 9
B. -4 ? x < 9
C. -4 < x < 9
D. -4 ? x ? 9
Use a proportion to solve the application.To determine the number of fish in a lake, researchers caught and tagged 260 of them. In a later sample of 72 fish, the researchers found that 30 were tagged. Estimate the total number of fish in the lake.
A. 8 fish B. 561,600 fish C. 108 fish D. 624 fish
Without graphing, determine whether the following data set is exactly linear, approximately linear or nonlinear.
A. nonlinear B. exactly linear C. approximately linear
Solve the problem.The surface area of a human body (in square meters) is approximated by 
where W is the weight of the person in kilograms and H is the height in meters. Find A if 
and 
A. 1.83 m2 B. 1.66 m2 C. 1.80 m2 D. 1.77 m2