What does 12- + 1 +11 equal

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

Pls i’m super dumb and i need with this one it’s due tomorrow

Find the radius of a circle that has a circumference of 16. the formula for the circumference of a circle is c = 2tr, where r is the radius and c is the circumference. the equation solved for r is r = c over 2π. r=4 r= 8 r=12 r= 16