What is the midpoint between (3,5) and (7,9)

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3