2.20 rounded to the nearest tenth is 2.2 it is already rounded if it was 2.29 it would be 2.3
If she only had 1 hour sessions she had 8 sessions in the first week because if you do 35 times 8 you get 280.
You can do 1-1/6 (1 represents the whole class)
6/6-1/6
=5/6
The answer is C. Factor the equation: 2x^2 + 10x + 12 which gives you............. 2(x + 2) (x + 3), and then cancel out (x + 3) because dividing (x + 3) by itself gives you one and the remaining term is 2(x +2) which is the same as 2x +4.