Answer:
i dont get whats the question
Step-by-step explanation:
1. -2x+9+5x+6
2. (7-2x)+(3x-11)
3. -3x+64x
4. 4-7+6x-4x+3
5. 9x-2(3x-11)
The part you don't need is "there are 10 periods in all during a week" because once you read the first two sentences you can tell you just need to do 24 x 2 which equals 48.
*Hope i helped :D