Please help need answer asap im on my test

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

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

Taber invested money in an account where interest is compounded every year.he made no withdrawals or deposits. the function a(t)=525(1+0.05)^t represent the amount of money in the account after t years. how much money did taber origanally invested?