This would follow the 
format
where m would be the price per cup
and b would be the money you start off with
y = A
and x = j
so we get
A = 0.75j + 14
as your answer
where m would be the price per cup
and b would be the money you start off with
y = A
and x = j
so we get
A = 0.75j + 14
as your answer