3. P(-3, 3), Q(1.2), R(3,-3), S(1.-3), T(-2,-2)
Find the perimeter and area of the polygon to the nearest tenth

When y’all answer can y’all explain too !

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax