Mark sold 145 red balloons, 348 yellow balloons ,and 287 blue balloons. if each person bought 3 balloons, how many people bought balloons.

What's the difference between: x≥0 and nonnegative integer. ?

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

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