Add or subtract by first simplifying each radical and then combining any like radical terms. Assume that all variables represent positive real numbers.
+ 6
- 2
A. 4
B. 4
C. 9
D. 9
Answer: D
Mathematics
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Simplify the expression.
?
A. 
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B.
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C.
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D.
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E.
Mathematics
Estimate the sum or difference by rounding each number to the nearest ten.88 + 95 + 19 + 17 + 99
A. 318 B. 330 C. 320 D. 300
Mathematics
Evaluate 
What will be an ideal response?
Mathematics
Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 801. Find a linear function which fits this data.
A. y = -4.525x + 484.25 B. y = 4.0725x + 488.25 C. y = 4.0725x - 488.25 D. y = 4.525x + 484.25
Mathematics