Perform the indicated operation and, if possible, simplify. Assume that all variables represent positive real numbers. 
A. 3x
B. 3x
C. 3x
D. x
Answer: B
Mathematics
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Find an exponential model for the following data set. Round your answer to two decimal places. t 0 3 6 9 y 77.09 56.20 40.97 29.87?
A. 
B. ?
C. ?
D. ?
Mathematics
Solve the problem.Jeff studied math for 
history for 
and physics for 
How long did he study?
A. 2
hr
B. 
hr
C. 8
hr
D. 
hr
Mathematics
Convert the improper fraction to a mixed number. Write the answer in lowest terms.
A. 4
B. 3
C. 3
D. 2
Mathematics
Solve the problem.Your company uses the quadratic model y = -11x2 + 350x to represent how many units (y) of a new product will be sold (x) weeks after its release . How many units can you expect to sell in week 19?
A. 6859 units B. 6441 units C. 10,621 units D. 2679 units
Mathematics