
Substract '-3.4x' at LHS nad the RHS of the above expression.

Add '4' on both LHS and RHs of the above expression.
A graphing calculator or spreadsheet program can do this for you. Below is a plot from the Desmos on-line graphing calculator.
0.25 is 1/4 if that's what youre asking, i'm not sure,
Answer:
You need to say how many cans go by a minute to be able to answer this question.
Step-by-step explanation: