Factor and simplify.1 - 2 sin2 x + sin4 x
A. cos4 x
B. sin2 x
C. (1 + tan2 x)
D. (1 - sin2 x)
Answer: A
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Solve the equation.
- 
= 1
A. 3 B. No solution C. -3, -1 D. 3, -1
Solve the problem.The strength S of a rectangular wooden beam is proportional to its width times the square of its depth. Find the dimensions of the strongest beam that can be cut from a 
cylindrical log. (Round answers to the nearest tenth.)
A. w = 6.8 in.; d = 9.2 in. B. w = 4.8 in.; d = 9.2 in. C. w = 5.8 in.; d = 8.2 in. D. w = 6.8 in.; d = 7.2 in.
Use a proportion to solve the application.According to a recent study, 1.67 million households in one American city have pets. Out of every 100 people, 42 have more than one pet. How many households own more than one pet?
A. 706,871 people B. 70,140 people C. 655,528 people D. 701,400 people
Give the domain and range for the rational function. Use interval notation.f(x) = 
+ 3
A. Domain: (-?, 2) ? (2, ?); Range: (-?, 3) ? (3, ?) B. Domain: (-?, 0) ? (0, ?); Range: (-?, 3) ? (3, ?) C. Domain: (-?, 0) ? (0, ?); Range: (-?, -3) ? (-3, ?) D. Domain: (-?, 3) ? (3, ?); Range: (-?, 0) ? (0, ?)