Determine the continuity of the function at the given points.f(x) =
at
x = -2 and x = 1
A. The function f is continuous at but not at
B. The function f is continuous at but not at
C. The function f is continuous at neither nor
D. The function f is continuous at both and
Answer: B
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Rationalize the denominator.
A.
B. 21
C.
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D.

Write the fraction or mixed number as a decimal. Round to the nearest thousandth if necessary.10
A. 1.6 B. 10.6 C. 17.667 D. 3.6
Solve the problem.The cost of a computer system increases with increased processor speeds. The cost C of a system as a function of processor speed is estimated as C(s) = 12s2 - 9s + 1900, where s is the processor speed in MHz. Determine the intervals where the cost function C(s) is decreasing.
A. Nowhere B. (0.4, ?) C. (-?, 0.4) D. Everywhere
Solve.The highest point at an oil drilling operation is the top of the 76-foot-high oil drilling rig. The lowest point the drill head has reached so far is -223 feet. How far above the drill head is the top of the oil drilling rig?
A. 299 ft B. -299 ft C. -223 ft D. 147 ft