How do you make a vein diagram of 12,30

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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.

The measure of an angle is 117°. what is the measure of a supplementary angle?