Use the equation to solve the following problems f(x) = -3x + 20 1.) F(4)
2.) F(10)
3.) F(-2)
4.) F(9)
5.) F(-21)

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done