Select the correct answer. What is the factored form of this expression?
4x^3 – 8x^2 – 9x + 18
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OA. (2x + 3)(2.1 + 3)(x - 2)
OB. (2.1 – 3) (2.1 - 3) (1 - 2)
OC. (2x + 3)(2x - 3)(x - 2)
OD. (2x + 3)(2x - 3)(x + 2)
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If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

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)