The number of chorus students increased by factor of 1.2 from the previous year write 1.2 as a percent

0.012%

Step-by-step explanation:

1.2 divided by 100

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.