Hi need the answers(well ya know, explain it t me at least) to all 5 by friday & i only need 1-4) all in

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.

Determine the vertex form of g(x) = x2 + 2x - 1. which graph represents g(x)? -nw -3-2-1, 1 1 2 3 -3 2- 1 -3- 1 2 3 - 1 2 3