Express as a product.log9 a10
A. log 9 ? log a ? log 10
B. 10 log9 a
C. log (9 ? a ? 10)
D. log9 a ? log9 10
Answer: B
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Provide an appropriate response.Graph f(x) = cos-1 
and g(x) = tan-1 
. Explain why the graph looks like it does.
What will be an ideal response?
Complete the equation so the result is an identity. 1 - 
= sin2x
A. cos2x B. cot2x C. sec2x D. tan2x
Find an expression equivalent to the given expression.
A. -cosh x B. -sinh x C. sinh x D. cosh x
Solve the problem.In 1995 the United States recovered 20% of its municipal wastes through recycling, up from 17% in 1990. Let P represent the percentage recycled and t the number of years since 1990. Find a linear function P(t) that fits this data. Use this function to predict the percentage recycled in 2003.
A. 21.2% B. 26.5% C. 22.9% D. 24.8%