Identify the intervals where the function is changing as requested.Increasing
A. (-2, 0)
B. (3, ?)
C. (3, 6)
D. (-2, ?)
Answer: B
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Determine the inequality which matches the calculator graph. Do not use your calculator. Instead, use your knowledge of the concepts involved in graphing inequalities.
A. y ? -3x + 1 B. y ? 3x + 1 C. y ? 3x + 1 D. y ? -3x + 1
Solve the system by the addition method. 2x + 15y = -919x + 3y = 42
A. {(-7, 7)} B. {(7, -7)} C. {(-3, 7)} D. {(9, -9)}
Perform the indicated operation.-18 + 24
A. -6 B. 42 C. -42 D. 6
Estimate an answer to the problem.An advertisement states that television sets are on sale at B&G Electronics. The sale prices are: 
set, $147.99; 
set, $208.95; 
set, $231.99; 27-inch set, $289.97; 
set, $519.97. Estimate the approximate number of 
style="vertical-align: -4.0px;" /> sets that can be bought for $40, 619. A. 140 B. 120 C. 1400 D. 80