2. Find the value of k if the graph of k f (x) = 2x2 +– has a point of inflection - at x = -1. Your answer

Differentiate: x¹0 cos(x) A) 10x⁹ - sin(x) D) 10x - sin(x) B) -10x'sin(x) E) -10xsin(x) C) x¹0 cos(x) + 10x sin(x) F) -x¹0 sin(x) + 10x cos(x)

The hourly operating cost of a plane which seats up to 405 passengers is estimated to be $5,328. If an airline charges each passenger a fare of $120 per hour of flight, find the hourly profit P it earns operating the plane as a function of the number of passengers x. [HINT: The cost function is constant (variable cost 0).] P(x) = 120x - 5328 Specify the domain. (Enter your answer using interval notation.) [0405] X = What is the least number of passengers the plane must carry to make a profit? (Round your answer up to the nearest whole number.) 44 X passengers

Given f(x)=x2, graph each function. G(x)=2f(x-3)+1