Solve the equation by factoring.2x2 - 18 = 0
A. {10}
B. {-9, 9}
C. {-3, 3}
D. {9}
Answer: C
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Solve by completing the square.x2 + 8x = 5
A. x = 4 + 
B. x = -1 ± 
C. x = -4 ± 2
D. x = -4 ± 
Find the surface area or volume.The region between the curve y = 
, -0.9 ? x ? 1.0, and the x-axis is revolved about the x-axis to generate a solid. Use a table of integrals to find the volume of the solid generated to two decimal places.
A. 3.81 B. 4.12 C. 3.40 D. 3.23
Determine whether the function is even, odd, or neither.f(x) = x3 - 
A. Odd B. Neither C. Even
Provide an appropriate response.When can direct substitution of a for x be used to find the limit of a function f(x) as x approaches a?
A. Always B. When f is continuous for all x, except x = a C. When f is continuous at a D. Only when f is continuous for all x