You cant simplify that fraction
Answer: $180
4ft + 5ft + 4ft + 5ft = 18ft
18 x 10 = 180
1) I'm not sure what an open operation is.
2) D
3) No
4) Yes
5) D
6) hmm
7) there doesn't seem to be a 6 or 7
8) C
Answer : 6 is opposite of 1
You can make purchases even when you don't have cash
hope this helps