Abby can buy an 8 pound bag of dog food for $7.50 or a foot 4 pound bag of the same dog food for $5.30which is a better bye

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

What is the total area of the figure?

Need showing work for this problem 56.25 ×25.80