In an electrical circuit, the voltage across a resistor is directly proportional to the current running through the resistor. If a current of 18 amps produces 720 volts across a resistor, how many volts would a current of 2.5 amps produce across an identical resistor? Record your answer and fill in the bubbles on your answer document.

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