Find the mean. If necessary, round to one decimal place.In a mathematics class, the following quiz scores were recorded for a student: 15, 1, 26, 15.
A. 12.8
B. 14.8
C. 14.3
D. 19.3
Answer: C
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Solve the problem.Mark and Rachel both work for Smith Landscaping Company. Mark can finish a planting job in 4 hours, while it takes Rachel 2 hours to finish the same job. If Mark and Rachel will work together on the job, and the cost of labor is $40 per hour, what should the labor estimate be? (Round to the nearest cent, if necessary.)
A. $53.33 B. $30.00 C. $120.00 D. $106.67
Find the area of the shaded region.
A. 116 cm2 B. 232 cm2 C. 73.5 cm2 D. 136 cm2
Solve the equation.
+ 11 = x + 7
A. {2, 8}
B. 
C. {8}
D. {-4}
Given the function f(x) = , identify any intervals on which f(x) is increasing, decreasing, or constant.
a. The function is decreasing over the interval (). b. The function is constant over the interval (). c. The function is increasing over the interval (). d. The function is constant over the interval () and (-4,