Solve.9x2 = 36
A. 
B. 2, - 2
C. 
D. 
, - 
Answer: B
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Find the vertices and foci of the ellipse.
+ 
= 1
A. Vertices: (±15, 0); Foci: (±9, 0) B. Vertices: (±15, 0); Foci: (±12, 0) C. Vertices: (0, ±15); Foci: (0, ±12) D. Vertices: (0, ±15); Foci: (0, ±9)
Evaluate the integral.
A. 4i + 
j + 9(1 + 
)k
B. 4i + 
j + 9(1 - 
)k
C. 4i + 
j + 9(1 - 
)k
D. 4i + 
j + 9(1 + 
)k
Use the discriminant to determine whether the equation has two rational solutions, one rational solution, two irrational solutions, or two nonreal complex solutions. Do not actually solve.w2 + 5w + 8 = 0
A. Two rational solutions B. Two irrational solutions C. One rational solution D. Two nonreal complex solutions
Solve the problem.The price of 1 lb of cookies from Grandma June's Cookie Company can be modeled by 
where C(t) is the price in dollars t years after Grandma June's Cookie Company started selling cookies. Find the linearization P1(t) of C at 
Then use this linearization to estimate the price of 1 lb of cookies 19 years after the company started business, and compare this to the value given by the model.
A. P1(t) = 1.437t - 14.032 P1(19) = $13.27, C(19) = $13.73 B. P1(t) = 1.071t - 14.032 P1(19) = $6.32, C(19) = $7.51 C. P1(t) = 1.437t - 14.032 P1(19) = $13.73, C(19) = $13.27 D. P1(t) = 2.202t - 14.032 P1(19) = $27.81, C(19) = $13.73