Calvin had $10. When he bought 7 colored pencils and 2 notebook at $1.30 per notebook, the change was $1.10 what is the price of 1 colored pencil?

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