What is the GCF of 9a4b4-27a3b3?

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

The radius of a sphere is 3 inches. which represents the volume of the sphere?

32a³b² 8ab² simplify the following expression.