Find the intervals on which the function is continuous.y = 
A. continuous everywhere
B. discontinuous only when ? = 7
C. discontinuous only when ? = 
D. discontinuous only when ? = -7
Answer: D
Mathematics
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Make the required change in the given equation.z = x2 + y2 to cylindrical coordinates
A. z = r2 B. r tan ? = 1 C. z = r2(cos ? + sin ?) D. r = cot ? csc ?
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Solve the inequality. Write the solution set in interval notation and graph it.-2(-2x + 4) + 3(x + 12) > -2(-2x - 8) + 1(x + 16)
A. (-2, ?)
B. (2, ?)
C. (-?, 2)
D. (-?, -2)
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Add.
+ 7
A. 
B. 1
C. 
D. 13
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Solve by using the multiplication principle to clear fractions.
x + 
= 
A. 
B. - 
C. 
D. 
Mathematics