Perform the indicated operation. Make sure you simplify your final answer.
? 
A. 3
B. 
C. 
D. 
Answer: A
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Find the limit and determine if the function is continuous at the point being approached.
sec(x sec2x - x tan2x - 1)
A. csc 8; yes B. sec 8; no C. does not exist; no D. sec 8; yes
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
+ 1
A. 
B. 
C. 
D. 
Solve the problem.A surveyor is measuring the distance across a small lake. He has set up his transit on one side of the lake 80 feet from a piling that is directly across from a pier on the other side of the lake. From his transit, the angle between the piling and the pier is 30°. What is the distance between the piling and the pier to the nearest foot?
A. 40 ft B. 69 ft C. 46 ft D. 139 ft
Determine the slope and the y-intercept. Then graph the equation.y = 4x - 7
A. m = 7, y-intercept: (0, 4)
B. m = 4, y-intercept: (0, 7)
C. m = 7, y-intercept: (0, 4)
D. m = 4, y-intercept: (0, - 7)