I hope you can understand my messy handwriting
Answer:
You have 8 choices for the third digit (digits 0 - 9 excluding the numbers you chose for the first and second digit). So by the multiplication principle (MP), there are 9*9*8 ways to do this. So there are 648 numbers that are 3 digit numbers and have no repeated digits.
Step-by-step explanation:
x + 9 = -44
1. Subtract 9 to both sides
x = -53
Go to khan academy they show you how
