Please help! I have no idea how to this and I have a quiz over it in two days!

The local farm is advertising a special on fresh picked peaches. the farm charges $4.25 to pick your own peck of peaches and $3.50 for each additional peck you pick. write an equation for the total cost of peaches in terms of the number of pecks. deine your variables. how much does it cost to pick 3 pecks of peaches?

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

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?