Two-thirds of the students who vote for student council president voted for Aisha. Aisha received 216 votes. Write and solve an equation to find the total number of students who voted in the election for student council president.

The temperature of a chemical solution is originally 21 ? c . a chemist heats the solution at a constant rate, and the temperature of the solution 75 ? c after 1212 12 minutes of heating. the temperature, tt t , of the solution in ? c is a function of x , the heating time in minutes. write the function's formula.