Guys plz press on this and answer I am so confused plz answer ;-)

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

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

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay