The FASTCAR company delivers cars to various countries. The number of cars delivered to South Korea is given by K(x) = 2.5x, and the number of cars delivered to the UAE is given by U(x) = 2x2. The company will deliver an equal number of cars to both countries in about years. (Note: Find three successive approximations. Do not round the answers at any stage.)

Standard deviation of 19,29,21,22,23

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)

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)