Only the top! the first three questions!

What is the difference between regular convex and concave polygons

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

How to find the exponential function y=ca^x, with points (1,2) and (2,1)