Two athletes start jogging at the same time. One jogs south at 6 miles per hour while the second jogs east at 8 miles per hour. After how long are the two athletes 30 miles apart?

Ineed to know the answer to this algebra question.

Mr. walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas 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