In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer lectures in a school of 450 students?
A. About 81 students
B. About 162 students
C. About 18 students
D. About 90 students
Answer: A
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Make the indicated conversion between American and metric units of capacity using the given property or properties. Round the answer to the nearest tenth unless instructed otherwise.33.7 quarts to liters (1 qt ? 0.95 L)
A. 64.0 L B. 8.8 L C. 35.7 L D. 32.0 L
Write the number in scientific notation.47,000
A. 4.7 × 103 B. 4.7 × 10-3 C. 4.7 × 10-4 D. 4.7 × 104
Solve the problem.Determine whether the ordered triple (-3, -1, 4) is a solution of the system of equations.2x - 2y - 3z = -164x - 3y + 3z = 3 x + y - 5z = -24
A. Yes B. No
Use the x-intercepts to find the intervals on which the graph of f is above and below the x-axis.f(x) = (x - 3)2(x + 5)2
A. above the x-axis: (-5, 3) below the x-axis: (-?, -5), (3, ?) B. above the x-axis: no intervals below the x-axis: (-?, -5), (-5, 3), (3, ?) C. above the x-axis: (-?, -5), (-5, 3), (3, ?) below the x-axis: no intervals D. above the x-axis: (-?, -5), (3, ?) below the x-axis: (-5, 3)