What is the formula to find the area of a triangle? choose all that apply​

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Which graph represents the parent function of y=(x+2)(x-2)

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with