Red Valley has 20 subway lines, and 6 of them are under construction. What percent of the subway lines are under construction?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36

If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?