Find the requested characteristic.Find the phase shift of y = sec 7t.
A. 0
B. 2?
C. 
D. 
Answer: A
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Solve the problem.If x varies inversely as y2, and x = 5 when y = 12, find x when y = 4.
A. x = 80 B. x = 45 C. x = 75 D. x = 3
Solve the problem.If ?1 and ?2 are complementary angles and ?1 is 5 times as large as ?2, then what are the measures of the two angles?
A. ?1 = 72°, ?2 = 18° B. ?1 = 75°, ?2 = 15° C. ?1 = 150°, ?2 = 30° D. Not enough information to solve
Solve the problem.In a school survey, students showed these preferences for instructional materials. Answer the question. 
About how many students would you expect to prefer written materials in a school of 900 students?
A. About 162 students B. About 9 students C. About 81 students D. About 324 students
Simplify the expression.-2 + 8(7 - 2x)
A. 16x + 54 B. -2x + 54 C. -16x + 56 D. -16x + 54