Answer: 750 - y(y-5)=0
Step-by-step explanation:
Problem: Area of the room = 750 square feet
Width = Length - 5 feet
We have a rectangular room. To calculate it's area we do:
Area = Width x Length
We know that width depends on Length in this exercise. Replacing our data above:
750 square feet = (Length - 5 feet) x Length
Let's rearrange our equation. If we named Length = y :
Now we do one more final step to match one of the options:
If you look carefully, there are two more correct answers similar to the equation above: y^{2}-5y=750
