Find the approximate side length of a square game board with an area of 132 in? (Round to the nearest inch as needed)

Please explain to me how you got the answer cuz I want to learn!!

Through non-collinear points there is exactly one plane.

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

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