Aphone company charges $0.06 per minute for local calls and $0.15 per minute for international calls. when your bill comes, it states that you accumulated 852 minutes with a charge of $69.84. write and solve a system of linear equations to find the number of local and international minutes used.

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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