A person can burn 250 calories in 20 minutes of running. Find the unit rate of calories burned per hour.

Arectangle with an area of 47 m² is dilated by a factor of 7. what is the area of the dilated rectangle? enter your answer in the box. do not leave your answer as a fraction.

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

Write the equation in logarithmic form 8^x=64