Joe can climb 30 stairs in 1 minute. Part A: Write an algebraic expression to show how many steps Joe can climb in x minutes. Part B: How many minutes would it take for Joe to climb 150 stairs?

part A: 30x
Part B: x = 5

Part A: 30 - x
part B: x = -120

Part A: 30x
part B: x = 120​