Solve the problem.Suppose the sales of a particular brand of appliance satisfy the relationship S(x) = 50x + 3000, where S(x) represents the number of sales in year x, with x = 0 corresponding to 1982. Find the number of sales in 
.
A. 6600 sales
B. 3250 sales
C. 3300 sales
D. 6550 sales
Answer: C
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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 (0, ±7) and foci (0, ±3)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the problem.A pulley of radius 25 cm rotates 7 times in 4 sec. Find the angular speed of the pulley.
A. 
radians per sec
B. 
radians per sec
C. 
radian per sec
D. 
radian per sec
Complete the table after finding a simplified form of the difference quotient.For the function f(x) = 
, complete the table below: 
Round to four decimal places.
A. 
B. 
C. 
D. 
Solve the problem.The graph depicts the amount of water left in a bathtub. Find and interpret each intercept.
A. y-intercept: 2; x-intercept: 20; The bathtub initially contained 20 gallons and emptied in 2 minutes. B. y-intercept: 2; x-intercept: 20; The bathtub initially contained 2 gallons and emptied in 20 minutes. C. y-intercept: 20; x-intercept: 2; The bathtub initially contained 2 gallons and emptied in 20 minutes. D. y-intercept: 20; x-intercept: 2; The bathtub initially contained 20 gallons and emptied in 2 minutes.