Please help and please explain !

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

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

Negative 5 1/12 + negative 4 1/4 + 6 3/4