Suppose that the functions fand g are defined for all real numbers x as follows. f(x)=x-5
g(x) = 2x2
Write the expressions for (fg)(x) and (f-g)(x) and evaluate (f+g)(-1).

(fg) (x)= ?
(f-g) (x) = ?
(f+g) (-1) = ?

What is the value of r of the geometric series?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.