Which expression is equivalent to 2(m - 4) + 1?

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas 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

What is the output, or dependent variable of quantity? 1: x 2: f(x) 3: y

Which situation is an example of an observational study?