The sum of two numbers is 21. one number is three less that the other. find the numbers.

9/10 divide by -3/15 as a mixed number

1: 4 if the wew 35 surfboards at the beach how many were short boards?

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