Find the equation of the line that passes through (1,3) and is perpendicular to 2 y = 2 x − 1 . Leave your answer in the form y = m x + c

Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station.he knows that the state tax is 5.5. how much change will he receive from a $5 bill?

What’s the answer ? use the picture to see the problem

Ineed to know how to write question one in mathematical terms