Solve the problem.The profit made when t units are sold, t > 0, is given by 
Determine the number of units to be sold in order for P > 0 (a profit is made).
A. t > 19 or t < 13
B. t = 32
C. t = 19 or t = 13
D. 19 < t < 13
Answer: A
Mathematics
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A rectangle has perimeter 14 m. Express the area of the rectangle as a function A(I) of the length I of one of its sides.
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Mathematics
Solve.The seats in a lecture hall are arranged in 24 rows with 8 seats in each row. Find how many seats are in this room.
A. 192 seats B. 202 seats C. 184 seats D. 200 seats
Mathematics
Solve the compound inequality. Express the solution using interval notation. Graph the solution set.x < 4 or x < 7
A. (4, 7)
B. (-?, 7)
C. (-?, 4) ? (7, ?)
D. (4, ?)
Mathematics
Determine the number that should be added to complete the square of the expression. Then factor the expression.x2 + 16x
A. 8; (x + 8)2 B. 64; (x + 8)2 C. 64; (x - 8)2 D. -8; (x + 8)2
Mathematics