Solve the problem.A circular pond is being installed in the corner of a yard, as shown. The installer needs to know the value of x in feet. Find x to the nearest tenth of a foot. 
?a = 50 ft
A. 7.6 ft
B. 8 ft
C. 8.2 ft
D. 7.3 ft
Answer: A
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For what values of x does the series converge absolutely?
A. - 
< x < 
B. - 
< x < 
C. -2 < x < 2
D. -1 < x < 1
Use a half-angle formula to find the exact value of the expression.cos
A. 
B. 
C. 
D. 
A tank initially contains 125 lbs of salt dissolved in 500 gal of water. Saltwater containing 3 lbs of salt per gal enters the tank at the rate of 5 gal per min. The mixture (kept uniform by stirring) is removed at the same rate. How many pounds of salt are in the tank after 1 1/2 hour? 19
What will be an ideal response?
Determine whether the relation is a function. Give the domain and range.{(3, 9), (9, -8), (6, 1), (-2, 9), (11, -8)}
A. function; domain: {-2, 3, 6, 9, 11}; range: {-8, 1, 9} B. not a function; domain: {-8, 1, 9}; range: {-2, 3, 6, 9, 11}