Select the correct answer.
TBM Use
(days) Tunnel Length
(feet)
6 410
15 815
20 1,040
28 1,400
33 1,625
38 1,850
45 2,165

During a construction project, engineers used explosives to excavate 140 feet of tunnel into a mountain. But because of time constraints and environmental concerns, they brought in a tunnel boring machine (TBM) to excavate the rest of the tunnel.

Which equation represents the length of the completed tunnel based on the number of days since TBM was introduce

Question

Select the correct answer.
TBM Use
(days)	Tunnel Length
(feet)
6	410
15	815
20	1,040
28	1,400
33	1,625
38	1,850
45	2,165


During a construction project, engineers used explosives to excavate 140 feet of tunnel into a mountain. But because of time constraints and environmental concerns, they brought in a tunnel boring machine (TBM) to excavate the rest of the tunnel. 

Which equation represents the length of the completed tunnel based on the number of days since TBM was introduce