Determine the equations of any horizontal and vertical asymptotes of 
.
A. horizontal: y = 4; vertical: x = 0
B. horizontal: y = - 3; vertical: x = -4
C. horizontal: y = 2; vertical: none
D. horizontal: y = 1; vertical: x = - 3
E. horizontal: y = -2; vertical: x = 3 and x = -4
Answer: C
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Simplify.
3
A. 
B. 
C. 
D. 
Solve the problem.The intensity L(x) of light x ft beneath the surface of a lake satisfies the differential equation 
. At what depth, to the nearest foot, is the intensity one tenth the intensity at the surface?
A. 26 ft B. 38 ft C. 13 ft D. 17 ft
Determine the indefinite integral.
A. sech x tanh x + C
B. tanh2 x + C
C. 
+ C
D. sech2 x + C
Solve the problem.The price of a desk was 5y. During a sale, the price was reduced by $40. The store sold 8x desks during the first week of the sale. Write an expression with parentheses to represent the value of the desks sold during the first week. Then use the distributive property to write the expression without parentheses.
A. 5y(8x - 40) = 40xy - 200y dollars B. 8x(5y - 40) = 40xy - 320x dollars C. 8x(5y - 40) = 40xy - 40 dollars D. 8x(5y - 40) = 40xy - 320 dollars