Perfect square trinomial: (a – b)2 = (a – b)(a – b) = a2 – 2ab + b2 find the product of (k – 9)2 using the perfect square trinomial rule shown on the left. the product (k – 9)2 can also be written as

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Which statements are true about box plots? check all that apply. they describe sets of data. they include the mean. they show the data split into four parts. they show outliers through really short “whiskers.” each section of a box plot represents 25% of the data.