9*1 = 9
9*2 = 18
9*3 = 27
9*4 = 36
9*5 = 45
The first five multiples of 9 are 9, 18, 27, 36, 45~
They both got the right answer but wrote it in different ways n +1+n
12.5 weeks. You take the do 150 divided by 12 to get 12 in a half
you cannott do that because they are different variables
hope this helps, have a great day