Can someone help me on these 2? (#17-18)

125 tickets were sold for the jazz band concert for a total of $1,022. students tickets cost $6 each, and general admission tickets cost $10 each. how many of each kind of tickets were sold?

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?