What is the answer g(x)=-2/5 x+3

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Combine like terms to make a simpler expression 3z+z

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe