After a 32% discount is applied, you purchase a new phone case for $51.20. What was the price before the sale?

Can someone me with my hwplz(only the circled ones)

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Mr. rose asked his students to draw a quadrilateral with 4 unequal sides. draw an example of this kind of quadrilateral.