Which of the following gear ratios will have the highest overall speed

Norma has an a-frame cabin. the back is shown below. how many square feet of paint will she need to cover the back of the cabin? explain how you found the answer.

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers