Evaluate.
? 
A. - 
B. 
C. 
D. - 
Answer: D
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Perform the indicated operations, expressing the answer in simplest form with rationalized denominators.
A. 4x4
B. 16xz
C. 32xz
D. 4x8z
Multiply.(2 - 
)(4 - 
)
A. 8 - 5x
B. 8 - 6
- x
C. 8 - 5
D. 8 - 6
+ x
Perform the row operation(s) on the given augmented matrix.(a) R2 = -4r1 + r2(b) R3 = 4r1 + r3(c) R3 = 3r2 + r3
A. 
B. 
C. 
D. 
The manufacturer of GRIPPER tires modeled its return to sales from television advertising expenditures in two regions, as follows:
Region1: 
Region2: 
where 
and 
are the sales revenue in millions of dollars, and 
and 
are millions of dollars of expenditures for television advertising. How much money will be needed to maximize sales revenue in both districts? Round your answer to the nearest million dollars.
A. $14 million
B. $39 million
C. $25 million
D. $18 million
E. $19 million