Correct?

quadratic regression equation best fits the data set?

1) The second selection looks correct, as it is the only one with a minimum at a positive x value, and a y-intercept more than 109.

2) Your choice cannot be correct, as it corresponds to a function with a minimum near x = 1.278/(2*0.056) ≈ 11.4. The function is obviously decreasing at that point, so is not a minimum there. My calculator shows the 4th selection is best.

put like terms together.orremember that the 45 becomes negative when moved to the other side.orthe minuses cancel out.

Num of plants = (original#ofplants)*(1.6)^t