-0) A store owner buys cell phones for $40 are marks up the price by 25%. At which price does she sell the cell phones?

$30
$50
$40
$100

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