PLSS HELP Langston has $45 greeting cards. He gives $18 of the cards to his friends. What percent of his greeting cards does he give to his friends?

A $18

B $40

C $60

D $67

Select the quadratic that has root x = 8 and x = -5

Match each inequality to the number line that represents its solution

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