Government economists of a developing country determined that the purchase of imported perfume is related to a proposed "luxury tax" by the following formula where n(x) measures the percentage of normal consumption of perfume when a "luxury tax" of x% is imposed on it. n(x) = 10,000 − 40x − 0.02x2 (0 ≤ x ≤ 200) find the rate of change of n(x) for taxes of 10%, 100%, and 145%. (round your answers to three decimal places.) 10% tax 100% tax 145% tax

25) 56(1) = 5b a. identity property of addition b. identity property of multiplication c. commutative property of multiplication d. commutative property of addition

Iam at home. /: i am playing video games. translate the following statement into symbolic form.

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations