How many solutions does the system have? You can use the interactive graph below to find the answer.
40 – 10y = –20
6r – 15y = -30

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