Using the variable x, write the interval using set-builder notation.[-4, 9)
A. {x| -4 < x ? 9}
B. {x| -4 ? x ? 9}
C. {x| x < 9}
D. {x| -4 ? x < 9}
Answer: D
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Find the area of the surface generated when the given curve is revolved about the x-axis. y = 
on 
A. ? B. 9? C. 7? D. 8?
(a)Find the inverse of the matrix 
.(b) Use the result from (a) to solve the system 
.
What will be an ideal response?
Factor the polynomial completely. If the polynomial cannot be factored, write "prime."294 - 6x2
A. 6(x - 7)2 B. 6(x + 7)(x - 7) C. prime D. 6(7 + x)(7 - x)
Substitute the given values into the formula and then evaluate to find the unknown quantity. Label units in your answer. If the answer is not exact, round your answer to the nearest hundredth.I = prt; I = 79.2, p = 220, r = 0.09
A. 4 units B. 1568.16 units C. 15.6816 units D. 0.4 units