Twice a number is 12 more than five times the number

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

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

100 points? me its important ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️