Simplify the following expression.
3(2x + 6) +5

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

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?