Randy can run six-tenths of a mile every 4 minutes, but it takes Julie 5 minutes. By the time Julie has run for 20 minutes, how far has Randy run? A
1.8 miles

B
2.4 miles

C
2.6 miles

D
3 miles

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Compound inequalities. , i’m being timed

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?