Verify the given linear approximation at a= 0. Then determine the values of x for which the linear approximation is accurate to within 0.1.

Solve the problem.The library is to be given 5 books as a gift. The books will be selected from a list of 21 titles. If each book selected must have a different title, how many possible selections are there?

A. 20,349 B. 5.109094217e+19 C. 4.257578514e+17 D. 2,441,880

Evaluate the expression.

A. 504 B. 1 C. 9 D. 60,480

Add.(10x2 - xy - y2) + (x2 + 11xy + 6y2)

A. 9x2 - 12xy - 7y2 B. 11x2 + 10xy + 5y2 C. 11x2 + 12xy + 7y2 D. 10x2 + 11xy + 6y2

Find an equation for the rational function graph.

A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) =