50 POINTS IF U ANSWER NEEDED ASAP The box plot shows the number of years during which 16 schools have participated in a marching band competition:

A box plot is titled Years of Participation and labeled Years. Number line from 0 to 10 with primary markings and labels at 0, 5, and 10. The box extends from 3 to 7 on the number line. There is a vertical line at 5. The whiskers end at 1 and 10.

At least how many schools have participated for 3 to 7 years?

3 schools
5 schools
7 schools
8 schools

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Find the greatest common factor of the polynomial: 10x^5+15x^4-25x^3 10x^5 x^3 5x^3 5

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.