What is the rate of return when 15 shares of Stock A, purchased for $15/share, are sold for $330? The commission on the sale is $6. Rate of Return = [?] %​

(this is grade level 12)​

The area of a rectangle is 54x^9y^8 square yards.if the length of the rectangle is 6x^3y^4 yards,which expression represents the width of the rectangle in yards

Aculinary club earns $1360 from a dinner service. they sold 45 adult meals and 80 student meals. an adult meal costs twice as much as a student meal. what is the cost of an adult meal?

Decide whether the rates are equivalent. 96 miles on 4 gallons, 380 miles on 15 gallons