Part1
simplify completely: the quantity 5 times x to the third power plus 10 times x to the 2nd power plus 15 times x all over 5 times x

a. x^2 + 10x^2 + 15x

b.2x + 6

c. x^2 + 2x + 3

d. x^4 + 2x^3 + 3x^2

part2
simplify completely: the quantity 3 times x to the 4th power plus 5 times x to the 2nd power plus 2 times x all over x

a. the quantity 3 times x to the third power plus 5 times x plus 2 all over x

b.3x^3 + 5x + 2

c.3x^2 + 5x^2 + 2x

d.3x^5 + 5x^3 + 2x^2

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

Fast! find the length of cu. the triangles are similar. show your work.

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3