### Home > MC1 > Chapter 6 > Lesson 6.3.1 > Problem 6-121

6-121.

Begin by multiplying *x* and *y* to fill the product box.

0.5 · 0.4 = 0.2

Then add *x* and *y* together to fill the sum box.

0.5 + 0.4 = 0.9

Follow the steps as outlined in part (a).

You will know you are right when the product is equal to −49.

Add *x* and *y* to complete the sum box.