I really don’t get this question and I need it for my quiz. Please help!

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

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r