Which typing time is the fastest? 220 words in 8minutes 600 words in 12 minutes •• 350 words in 10 minutes 225 words in 5 minutes

Taking algebra two apex courses and need with these questions

Can someone me and do the problem plz so i can understand it more better

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