I have the same question on a test I'm taking thanks
You can honestly find it your self your probably failing your class
Eli traveled a total of 8.6 miles. He went to the library and back. 3.75 + 3.75. and he also added and extra 1 1/10 mile. so, 3.75 x 2 = 7.5, 7.5 + 1 1/10 = 8.6. Hope that helped!
(-35-42-63)/7= (-140)/7=-20