how to do this question plz. if you don't know the answer don't answer it if you know the answer answer it.

If f(x)= 3x+6 which of the following is the inverse of f(x)

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below. the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

For what values of x is x2 + 2x = 24 true?