Use front-end rounding to round each number. Then, add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.estimateexact 
A. Estimate: $38; exact: $33.54
B. Estimate: $36; exact: $33.64
C. Estimate: $38; exact: $33.64
D. Estimate: $38; exact: $33.66
Answer: A
Mathematics
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Multiply and simplify. Assume that all variables represent non-negative numbers.2
(
+ 
)
A. 10
+ 10
B. 2
+ 5
C. 2
+ 5
D. 2
+ 10
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Provide an appropriate response.Change 
to a percent equivalent.
A. 95.8% B. 91.7% C. 75% D. 83.3%
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Find the solution set of the system by graphing the equations by hand. If the system is inconsistent or dependent, say so.
A. (0, 1) B. (1, 0) C. (0, 0) D. (1, 1)
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Graph the sinusoidal function.y = 2 sin (?x)
A. 
B. 
C. 
D. 
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