What is the y=mx+b of the equation 5x−2y=16

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

For what value of (y) is 3^3/3^y =1/9