Which set of angles is complementary?

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Me i’m stuck on all these questions besides the two bottom ones