Astudent gently drops a ball from different heights and measures the time it takes to fall to the ground. which statement best describes why the investigation is an experimental study? a) the student does not use a control group. b) there is only one independent variable involved. c) the student sets the values of the independent variable. d) it is possible to establish a cause-effect relation between the variables.

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Find the commission on a $590.00 sale if the commission is 15%.

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.