Which function describes this graph?​

Idont get this question can someone me solve it? ** the distance light travels in one second (1 light second) is about 1.86 ×10^5 mi. saturn is about 475 light-seconds from the sun. about how many miles from the sun is saturn..my guess is 8.83* 10^7 you so much

Which expression is not a polynomial?

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?