3n-1<5 and -2n+3<11 im honestly kinda stuck

What is the greatest common factor of 6a, 8a^{2}, and 14?

Name the quadrilaterals that have four equal sides.

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