HELP WILL GIVE BRAINLIST

Imagine a new pasture with grass growing on it. every day after the seeds have germinated, the number of blades of grass in the pasture triples. after 18 days, the entire pasture is completely covered in grass. how many days did it take for the pasture to be one-third covered in grass?

For each proportion find the unknown number x 1/5/8=×/15

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?