A railroad crew can lay 5 miles of track each day. They need to lay 135 miles of track. The length, L (in miles), that is left to lay after d days is given by the following function
1 (d) = 135 - 50
N
Answer the following questions.

Khalid and Sue's Height together is 126 Inches. The difference is 6 inches, so therefore you subtract 6 from the total getting you 120 Inches. You do this with all of the problems for example: The first one. Sue is 72 inches and Khalid is 54. Add them together and subtract them by 6 to get your final answer. Please DO NOT quote me on this lol. This is how I read the question. I think this is right but I am not absolutely 100% sure. Hope this helps.