Suppose a three-factor model is appropriate to describe the returns of a stock. Information about those three factors is presented in the following chart:

Factor ? Expected Value Actual Value

GDP .0000734 $17,034 $17,863

Inflation -.90 2.80% 2.6%

Interest rates -.32 3.70% 3.5%

a) What is the systematic risk of the stock return?

b) Suppose unexpected bad news about the firm was announced that causes the stock price to drop by 1.1 percent. If the expected return on the stock is 11.7 percent, what is the total return on this stock?

I tried to follow a example, but couldn't follow the math to get the same answer. Please walk me through this, as if I were a child; I am old, horrible at math, and trying to learn. I do not have Excel.

Here is my attempt at a)

M = .0000734 ($17,863 17,034) .90(2.60% - 2.80%) - .32(3.50% - 3.70)

M = .0000734 (829) - .90 (-.02) - .32(-.02)

M = .0608486 - -.018 - -0.0064

M = .2472486 (Wrong, I assume)

I couldn't attempt b because I wasn't able to follow the example.