The standard unit of mass is the : A. gram B. kilogram C. pound D. cubic centimeter

With this one. will mark brainliest

What does x = in this equation x+3+2x=x+5

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