There are 190 students taking band, chorus, or both. if there 180 students taking band and 60 students in both band and chorus, how many students are only in chorus?

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?