A plane can fly 540 miles with the wind in one hour less than it can fly 480 miles against the wind. The average wind speed is 30 miles per hour. Find the speed of the plane in still air.

Graph the region.x + y ≥ 3 andx ≥ 1, y ≥ 0

If m(x) = x3 and n(x) = find the function value, if possible.(m – n)(-5)

The stopping distance of a car varies directly as the square of the speed of the car. If a car traveling 40 mph has a stopping distance of 109 ft, find the stopping distance of a car that travels 25 mph. (Round the answer to one decimal place.)

Find the and of the function.f (x) = 6×2 – 60

Find the resulting interval. (-∞, 5] ∩ [-1, 12)

Identify the restricted values for the equation. – 14 = 0

The cost in dollars of producing x toy cars is C(x) = 2.2x + 1. The revenue for selling x toy cars is R(x) = 6.45x. To calculate profit, subtract the cost from the revenue.a. Write and simplify a function P that represents profit in terms of x.b. Find the profit of producing 40 toy cars.

Approximate the function value from the graph.(f + g)(-4)

Find the x- and y- intercepts of the function.g(x) = -4x – 14