Solve the problem.Write an equation for the tangent line to the curve 
at the point 
A. x - y + 2 = 0
B. y = x - 2
C. x + y = 1
D. y = x + 1
Answer: A
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Find the indicated term for the geometric sequence with the first term a1 and common ratio r.Find a7 when a1= 3, r = -2
A. a7 = -384 B. a7 = -192 C. a7 = 192 D. a7 = 384
Plot the point given in polar coordinates.
A. 
B. 
C. 
D. 
Solve the problem.An airplane is sighted at the same time by two ground observers who are 2 miles apart and both directly west of the airplane. They report the angles of elevation as 14° and 
How high is the airplane?
A. 1.3 mi B. 0.75 mi C. 0.48 mi D. 2.02 mi
Solve the problem by using a nonlinear system.The area of a rectangular rug is 84 ft2 and its perimeter is 40 feet. Find the dimensions of the rug.
A. 7 ft by 14 ft B. 7 ft by 13 ft C. 6 ft by 14 ft D. 6 ft by 13 ft