Can you guys me with this im not that good with math i need the answer tonight

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Aculture started with 2,000 bacteria. after 8 hours, it grew to 2,400 bacteria. predict how many bacteria will be present after 19 hours . round your answer to the nearest whole number. p=ae^kt

Factor the polynomial, if possible. if the polynomial cannot be factored, write prime. 9n^3 + 27n^2 – 25n – 75