Mrs. quan wants to make a quilt that is 12 squares long and 9 squares wide. how many squares will be in her quilt?

a.
21 squares

b.
42 squares

c.
108 squares

d.
144 squares

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

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.

How do you write y-10=2 (x-8) in standard form