Apolar bear swims 390 meters at a constant rate in 150 seconds. what is the speed of the polar bear?

When you answer this can you explain

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

The function show two sisters' savings account and the rate at which they plan to deposit money