What are the x-intercepts of the graph of y= x^2 + 7x + 12? O A. (4,0) and (3,0)
O B. (-4,0) and (-3,0)
O C. (-7,0) and (-12, 0)
O D. (7,0) and (12, 0)

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?