Please help. is due today. Thank you​

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.

Solve -3 (r + 5) = -9 enter ur answer in the box x = __