Solve the problem.The appliance store where the Scott family shops offers a 9% discount for paying cash. The Scott family received a discount of $88. What was their total bill before the discount? Round your answer to the nearest dollar, if necessary.
A. $10
B. $978
C. $8
D. $800
Answer: B
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (±6, 0) and foci at (±5, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the problem.Raul, who is 1.66 m tall, wishes to find the height of a tree with a shadow 32.51 m long. He walks 21.48 m from the base of the tree along the shadow of the tree until his head is in a position where the tip of his shadow exactly overlaps the end of the tree top's shadow. How tall is the tree? Round to the nearest hundredth.
A. 2.76 m B. 4.89 m C. 1.66 m D. 2.51 m
Solve the problem.Noah and Ben are running in the Walker Street Fun Run. Noah runs at 7 mph, Ben at 5 mph. If they start at the same time, how long (in minutes) will it be before they are 
mile apart?
A. 10 min B. 6 min C. 24 min D. 150 min
Given the set sketched on the number line, identify the type of interval (open, closed, half-open, open infinite, closed infinite), write the set using set-builder notation, and write the set using interval notation.
A. closed infinite interval; {x|x ? 1}; [1, ?) B. open infinite interval; {x|x > 1}; (1, ?) C. open infinite interval; {x|x < 1}; (-?, 1) D. closed infinite interval; {x|x ? 1}; (-?, 1]