Nora and Lila are reading novel for book club. Nora is on page 128 and plans to read 8 pages

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?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Ineed me i stuck and i don’t want to get it wrong