Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 22.5°
A. - 
B. 
C. - 
D. 
Answer: D
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Solve the problem. If necessary, round your result to the nearest tenth unless instructed differently. The precise value of your approximation may depend on the conversion path that you choose.A label on a box shows that the box weighs 110 kg. How many pounds is that?
A. 116.6 lb B. 242 lb C. 49.9 lb D. 279.4 lb
Find n(A) for the set.A = {x | x is a second in a minute}
A. n(A) = Infinite B. n(A) = 12 C. n(A) = 60 D. n(A) = 120
Solve the problem.The number of adult cats age 3 and older who are rescued from shelters in a certain region are shown in the table for various years.
Let f(t) be the number (in thousands) of adult cats that are rescued from shelters in the year that is t years from 2008. A reasonable model is 
Estimate the number of adult cats (to the nearest hundred) that will be rescued in 2025.
A. 9300 cats B. 10,000 cats C. 11,000 cats D. 12,000 cats
Four equilateral triangles cut from the same fabric are needed to complete the quilt square design shown.
To form the four small triangles the designer uses one equilateral triangle whose sides are
twice the length of the sides of the needed triangles. Then he makes three cuts from midpoint to midpoint as shown. Explain how these cuts will form four congruent triangles whose sides are half the length of the side of the original piece of cloth.
