An artist made a glass window that is 3 1/2 feet by 2 3/4 feet the artist design used squares of colored glass that measures 1/4 feet by 1/4 feet how many colored squares did the artist use

Let's find the area of the glass window by itself. To find the area, all you have to do is do lw=a.
I'm going to turn it into a decimal for it to be easier to multiply.
3.5×2.75= 9.625
We have the area, now let's find the area of the colored squares but multiply.
.25×.25= .0625
We should now divide the area of the glass window by the area of the colored squares to find how any were used.
9.625÷.0625=154
The artist used 154 colored squares for his glass window.

Basic algebra equation. first set up your equation: divide out 9.and now you are left with 2x + 4 = 8.