In the proportion 5/6=10/12 the means are 6and 10

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

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.

Simplify each expression for 18, 20, and 21