Which expression is equivalent to 2.5 + 4(3/4a - 5) - 9.5

: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?

Graph each quadratic function and identify its key characteristics. f(x) = x^2 - 2x - 3

The length of a rectangle is 2 inches more than twice it’s width. if the perimeter of the rectangle is 70 inches,find it’s length and width