Use synthetic division to divide.(7x2 + 55x - 72) ÷ (x + 9)
A. -8x + 9
B. x - 8
C. -7x + 8
D. 7x - 8
Answer: D
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Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (-9, 0) and (9, 0)
vertices at (-81, 0), (81, 0)
B. center at (0, 0)
foci at (- 6
, 0) and (6
, 0)
vertices at (-9, 0), (9, 0)
C. center at (0, 0)
foci at (0, - 6
) and (0, 6
)
vertices at (0, -9), (0, 9)
D. center at (0, 0)
foci at (0, -3) and (0, 3)
vertices at (0, -9), (0, 9)
Factor the polynomial completely. If the polynomial cannot be factored, say it is prime.2x2 + x - 28
A. (2x + 7)(x - 4) B. (2x - 7)(x + 4) C. (2x - 4)(x + 7) D. (2x + 4)(x - 7)
Evaluate the function for the indicated input and interpret the result.The table lists the number of persons voting in an election by election year and sex, for a small community. 
Let this table be a partial numerical representation of a function f, where 
computes the number of persons who voted in the year x whose sex is y. Evaluate 
Interpret the result.
A. f (1976, Female) = 891 The number of females who voted in 891 was 1976. B. f (1976, Female) = 15 The number of females who voted in 1976 was 15. C. f (1976, Female) = 703 The number of females who voted in 1976 was 703. D. f (1976, Female) = 745 The number of females who voted in 1976 was 745.
Solve the problem.If two sound sources at the same volume are equidistant from a microphone, the pressure on the microphone is given by p = a cos ?1t + a cos ?2twhere a, ?1, ?2 are constants and t is time. Write p as a product of cosine functions.
What will be an ideal response?