She probably does that for exercise. So, she gets to the level that she wants, and she gets more exercise so she gets there faster.
4(m+3) =10m-6
4m +12= 10m-6 Expanded the brackets
12= 6m -6 took away 4m from both sides
18=6m added 6 to both sides
m=3 divided both sides by 6
Yes and the correct one is A
X/8 > 2÷(3+4+1)×2 can be simplified as:
x/8 > 2÷(3+4+1)×2
= x/8 > 1÷(3+4+1)
= x/8 > 1÷(8)
= x/8 > 1/8
= x > 1
As shown in the attached picture, the red shaded part is the graph of x>1