20% of a university's freshman class are majoring in Economics. If 200 students in the freshman class
are Economics majors, how many students are in
the freshman class?

What is the ratio of the length of an object in yards to the length of the same object in miles?

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)