Write a variable expression for this amount.
M more than eighteen

I understand what you wrote as 18 + M = y. We don't know what M and y are. They are variables. When you add M to 18, it is equal to a value y.

I hope this makes sense. This is the foundation of algebraic thinking.

clock

step-by-step explanation:

answer: translate the circles so they share a common center point and dilate circle y by a scale factor of 3.