Store e offers a book that karen wants for 20% off its regular price of $15.00. store f sells the same book for $15, before a $3.00 mail-in rebate. where should karen purchase the book? explain your reasoning. (be sure to consider the cost of postage, as well as the time and effort required to mail in the rebate request in your response.)

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 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)

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10

Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9