Use the unit circle to determine the value of the given expression or state that it is undefined.sec 
A. -2
B. - 
C. 
D. - 
Answer: B
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Use scientific notation to perform the following operations. Leave your answer in scientific notation.(5 × 109) - (3 × 108)
A. 4.7 × 109 B. 4.7 × 108 C. 2 × 109 D. 2 × 101
Use the distributive property to rewrite the expression.9 ? x + 9 ? z
A. 18(x + z) B. 81(x + z) C. 9(xz) D. 9(x + z)
Solve the problem, using 3.14 for ?. Round to nearest tenth unless instructed differently.A wicker basket has a circular rim with a diameter of 7 in. How many inches of ribbon are needed to go once around the rim?
A. 22 in. B. 20 in. C. 49 in. D. 44 in.
Use the graph to answer the question.
What was the percent of increase in sales between month 2 and month 12 of 2009? Round your answer to the nearest tenth.
A. 25.0% B. 14.3% C. 22.2% D. 28.6%