Solve the problem.The sum of the measures of the angles of any triangle is 180°. In triangle ABC, angles A and B have the same measure, while the measure of angle C is 30° larger than each of A and B. What are the measures of the three angles?
A. A and B: 60°; C: 60°
B. A and B: 50°; C: 80°
C. A and B: 80°; C: 50°
D. A and C: 60°; B: 60°
Answer: B
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Solve the problem.Find the point on the curve of intersection of the paraboloid 
and the plane 
that is farthest from the origin.
A. (2, -2, 2) B. (-2, -2, 2) C. (2, -2, -2) D. (-2, 2, 2)
In a series RC circuit, i leads e by 50ø. Find the value of i when e = 0 v and i = 15 mA sin ¦ t.
a. 11.49 mA b. 9.6 mA c. 0 d. -9.4 mA e. -11.49 mA
Solve the problem.The total sales in dollars of some small businesses fluctuates according to the equation 
, where x is the time in months, with 
corresponding to January, 
, and 
Determine the month with the least sales and give the sales in that month.
A. June; $4,300 B. December; $8,500 C. September; $4,200 D. March; $12,800
Graph the system of inequalities.2x + y ? 4 x - 1 ? 0
A. 
B. 
C. 
D. 