Do you guys know how to multiply decimals because i can’t i forgot! what’s 87.8 times 66.4

Who can me with this algebra for your guys.

Hamburger heaven is having a lunch special where customers buy one -pound cheeseburger and get one free. if they set aside pounds of meat, how many -pound cheeseburgers can they make?

The function f(x) is shown on the graph. what is f(0)? a. 0 only b. –6 only c. –2, 1, 1, and 3 only d. –6, –2, 1, 1, and 3 only