please answer of the questions and show work. also specify which answers go to which problem/section for 20 points and i will also mark brainliest! thank you so much! :)

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

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Match each inequality to the number line that represents its solution