Question

Isaac is making sandwiches for a group of friends. He needs 3 ounces of meat for each sandwich.

Part A: Isaac is not sure how many sandwiches he will be able to make. Write an expression with a variable that represents the amount of meat Isaac needs for his sandwiches. Identify what the variable represents.

Part B: If Isaac has 18 ounces of meat, how many sandwiches can he make? Create an equation and show all work to solve it.

Answer 1

Explain no straight answers please c:

Answer 2

Let's do B first. 3 ounces for the first sandwich, 15 ounces left...

How many sandwiches?

Answer 3

5?

Answer 4

He can make at least 5 sandwiches, right, 3 + 3 + 3 + 3 + 3 = 15 ounces of meat.

When we are writing expressions we like to define variables. We can say something like

n = number of sandwiches

Answer 5

Also, for this expression, it would be okay if Issac had an ounce or two of meat leftover. In our expression, that means instead of an \(=\) sign, we might have a \(\le\) sign.

Answer 6

Okay, so how could we express the limitation of the total number of sandwiches in terms of the total amount of meat?

Answer 7

Let's say I have an unlimited amount of meat, how much of it would I use to make 11 sandwiches? 4 sandwiches?