Amy runs 6 miles in 45 minutes. at the same rate, how many minutes would she take to run 4 miles?

Ineed if you could explain and give me the answer you! this needs done

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.