Exponential function question. : /

Which of the fallowing best completes the sequence 5,10,15, a) 30 b) 22 c)25 d)35

Give me the equations of two lines that have the same slope but are not parallel.

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