Write a division sentence that can be used to represent the following repeated subtraction. 24-8=16. 16-8=8. 8-8=0

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?