Please help find the value of x please help find the value of 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

Which two undefined geometric terms always describe figures with no beginning or end?

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.