I don't understand this:
Directions: "Find a linear model and use it to make a prediction."
Problem: "There are 55 blades of grass in 1 in^2 of lawn. There are 230 blades of grass in 4 in^2.. How many blades of grass are in 3 in^2 of lawn?

So far I have it worked all the way to the equation (equation in comments). But after that, I don't understand how to solve for x. What I would normally do, compared to the example problem, is different.

Sorry if this doesn't make sense.

Question

I don't understand this:
Directions: "Find a linear model and use it to make a prediction."
Problem: "There are 55 blades of grass in 1 in^2 of lawn. There are 230 blades of grass in 4 in^2.. How many blades of grass are in 3 in^2 of lawn?

So far I have it worked all the way to the equation (equation in comments). But after that, I don't understand how to solve for x. What I would normally do, compared to the example problem, is different.

Sorry if this doesn't make sense.