What divided by what equals 17

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

What percent of 18 is 24? and plz explain thx.

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