The answer is B. If you multiply it you get the original problem.
A. f(x) = 7 + 0.3x
Just re-read your question! Hope I helped!
Unit rate is in the quantity of one.
2/1 is a unit rate
6/3 is a rate
4/1 is a unit rate
The answer is 81 and 1/8 you take 1298and ÷ by 16
