Sklyer heated up a bowl of “holiday punch” at a constant rate. After 5 minutes of heating, the punch was 45° F. After 18 minutes of heating, the punch was 71° F. Write a linear equation to model this situation. Use T for Temperature and m for minutes heating.

Set up a fraction with 2 cups of sugar (s) at the top and 32 brownies (b) at the bottom. 2s/32b. Now, set up the next fraction with x cups of sugar (because we don't know the amount of sugar) at the top and 72 brownies (b) at the bottom. Set them equal. Your equation should be 2s/32b=x/72b. Cross multiply these values (if you wrote them down; 32x=144) and solve for x.