Brandon bought 21 chicken wings for $39.90. How much would it cost for 15 wings?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

Maddie's rectangular kitchen has an area of 10 square yards and a length of 3 3/4 yards.how many yards wide is maddie's kitchen?