1. Find the domain of the function. f(x)=squareroot 23-x

2. Find the nth term and the indicated term of the arithmetic sequence whose initial term, a, and common difference, d, are given. a=4; d=-7 a_n=?; a₁₆=?

3. Use a table and/or a graph to decide whether the limit exists. If it exists, find its value.

lim 4+x/x^3

x arrow 0

4. Find the exact value. Do not use a calculator.

cos 3pi/2

5. Find the domain of the function. g(x)= x/x^2-49 cos