Graph the given equation, indicating vertices, foci, and asymptotes (if it is a hyperbola).
+ 
= 1
A. 
Vertices: (±10, 0); Foci (±6, 0)
B. 
Vertices: (0, ±10); Foci (0, ±6)
C. 
Vertices: (±8, 0); Foci: (±10, 0)
D. 
Vertices: (0, ±10); Foci (±6, 0)
Answer: B
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Find the product. Write your answer in simplest form.
? 
A. 
B. 
C. 
D. 
Solve the problem involving modeling with polynomial functions.For this problem, y-values correspond to the amount spent by Country X on imports (in millions of dollars) over the years 1986 (x = 0), through 1993 (x = 7). (a) Use the data given in the table below to determine a quartic (fourth-degree) polynomial model. 
(b) Based on the quartic model, how much was spent on imports in 1987?
A. (a) y ? 0.0475x4 - 0.727500x3 + 3.394
x2 - 4.12
x + 1.69;
(b) $3.65 million
B. (a) y ? 0.0475x4 - 0.727500x3 + 3.394
x2 - 4.12
x + 1.69;
(b) $0.28 million
C. (a) y ? 0.0475x4 - 0.727500x3 + 3.394
x2 - 4.12
x + 1.69;
(b) $3.55 million
D. (a) y ? 0.0475x4 - 0.727500x3 + 3.394
x2 - 4.12
x + 1.69;
(b) $1.95 million
Solve the problem.Softee Blankets charges $6 for shipping orders of $20 or less, $10 for orders from $20.01 to $70, and $15 for orders over $70. One week shipping charges for 510 orders totaled $5060. There were 40 more orders for $20 or less shipped than there were orders for over $70. Find the number of orders shipped at each rate.
A. $20 or less: 230; $20.01 to $70: 160; over $70: 120 B. $20 or less: 160; $20.01 to $70: 230; over $70: 120 C. $20 or less: 280; $20.01 to $70: 110; over $70: 120 D. The numbers cannot be determined from the given information.
Evaluate using a table of integration formulas.
dx
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C