What is the equivalent expression of (b^7/4^6) choose one
A. b^-21 * 4^-15
B. b^21/4^15
C. 4^15/B^21

PLEASE I NEED AN ANSWER IF YOU CAN HELP

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