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 900 students?
A. About 324 students
B. About 180 students
C. About 162 students
D. About 18 students
Answer: C
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An 15-foot ladder resting against a house reaches a windowsill 13 feet above the ground. How far is the base of the ladder from the foundation of the house? Round to the nearest tenth of a foot.
A. 10.8 feet B. 7.5 feet C. 5.0 feet D. 5.5 feet E. 8.1 feet
List the numbers that precede and follow the given number in the given base.138
A. A8; C8 B. 108; 128 C. 128; 158 D. 128; 148
Find the curvature of the space curve.r(t) = ti + (sinh t)j + (cosh t)k
A. ? = sinh2 t
B. ? = cosh2 t
C. ? =
D. ? =
Use the graph to determine the domain and range of the function.
A. domain: all real numbers range: all real numbers B. domain: {x|x ? -3, x ? 3} range: {y|y ? 0 or y ? 1} C. domain: {x|x ? 0 or x > 1} range: {y|y ? -3, y ? 3} D. domain: {x|x ? -3, x ? 3} range: {y|y ? 0 or y > 1}