Because you can have a negative inside the absolute value so even if it is inside the absolute value of -3 will come out as 3.
No, no value for x will result in you getting the same amount of money
I.e. on the first day if x =2 you earn 33. on the second day you would've earned 44. Of course this may be wrong so best to double check
The answer is 30
7(8)+4(2)-2(17)=30
At least 3 2/3 can fit into 2
