Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (-2, 1)
foci at (- 3
, 1), (3
, 1)
vertices at (6, 1), (-6, 1)
B. center at (1, -2)
foci at (1 + 3
, -2), (1 - 3
, -2)
vertices at (-8, 1), (4, 1)
C. center at (-2, 1)
foci at (-2 + 3
, 1), (-2 - 3
, 1)
vertices at (-8, 1), (4, 1)
D. center at (-2, 1)
foci at (-2 + 3
, -2), (-2 - 3
, -2)
vertices at (6, 1), (-6, 1)
Answer: C
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Suppose that a car rental agency charges a fixed amount per day plus an amount per mile for renting a car. Heidi rented a car one day and paid $100.00 for 300 miles. On another day she rented a car from the same agency and paid $150.00 for 550 miles. Determine the linear function that the agency could use to determine its daily rental charges.
A. f( x ) = 0.4x - 40 B. f( x ) = 0.4x + 40 C. f( x ) = -0.2x + 40 D. f( x ) = 0.2x - 40 E. f( x ) = 0.2x + 40
Find the particular solution to the given differential equation that satisfies the given conditions.3y" + 17y' - 28y = 0; Dy = 0 and y = 2 when x = 0
A. y = 
e-7x + 
e4x/3
B. y = - 
e-7x - 
e4x/3
C. y = 
e7x + 
e-4x/3
D. y = 
e-7x + 
e4x/3
Convert the angle into degree decimal form. Round the answer to two decimal places.264°58'26''
A. 264.98° B. 264.93° C. 265.03° D. 264.97°
Find the probability.The table lists the eight possible blood types. Also given is the percent of the U.S. population having that type.
Let E be the event that a randomly selected person in the U. S. has type B blood. Let F be the event that a randomly selected person in the U. S. has RH-positive blood.Find P(F|E).
A. 0.818 B. 0.340 C. 0.720 D. 0.107