Solve the problem.Sue drove her car 362 miles in January, 342 miles in February, and 280 miles in March. If her average mileage for the four months from January to April is to be at least 301 miles, how many miles must she drive in April?
A. at least 220 miles
B. at most 220 miles
C. at least 321 miles
D. at most 301 miles
Answer: A
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Solve the problem.The weights (in pounds) of the five books in Lynn's backpack are as follows: 2.8, 3.1, 3.2, 2, 1.2 What is the mean of these weights? Round to the nearest tenth.
A. 2 pounds B. 3 pounds C. 2.5 pounds D. 2.1 pounds
Solve the inequality.16 - x2 ? 0
A. x ? -4 B. x ? -4 or x ? 4 C. x ? 4 D. -4 < x < 4
Decide whether the relation is a function, and give the domain and range.
A. Not a function; domain: (-?, -3]; range: (-?, ?) B. Not a function; domain: (-?, ?); range: (-?, -3] C. Function; domain: (-?, -3]; range: (-?, ?) D. Function; domain: (-?, ?); range: (-?, -3]
Graph the inequality on a number line. Then write the solution in interval notation.-1 ? x < 3
A. (-1, 3)
B. (-1, 3]
C. [-1, 3]
D. [-1, 3)