Omg- I need mega help- Ok- WHATS 1+1?! fr- this is such a hard question

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

Which points are solutions to the linear inequality y < 0.5x + 2? check all that apply. (–3, –2) (–2, 1) (–1, –2) (–1, 2) (1, –2) (1, 2)

Through non-collinear points there is exactly one plane.