Which statement best compares -1/2 and -2 1/2

Find two rational expressions that have the difference of 2-n/n-4

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?

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3