Solve by the method of your choice.-3(y - 1)2 + 9 = 73
A. 
B. 
C. 
D. 
Answer: B
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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.tan ? = 
, ? < ? < 
Find cos 
.
A. - 
B. 
C. 
D. - 
Use the graph to evaluate the limit.
f(x)
A. -1 B. ? C. does not exist D. 1
Several logs are stored in a pile with 20 logs on the bottom layer, 19 on the second layer, 18 on the third layer, and so on. If the top layer has one log, how many logs are in the pile? ?
A. 200 B. 190 C. 210 D. 209 E. none of the above
Solve the problem.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 42 ft and the vertical clearance must be 21 ft at a point 18 ft from the center. Find an equation for the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1