Samuel buys 3 3/4 feet of lumber for a shelf. the lumber costs $ 2.25 per pound how much did samuel pay?

3/4 = c/36 i need with this fraction proble.

Write the equation of the circle centered at (10,-2) with radius 2.

Let x have probability generating function gx (s) and let un generating function u(s) of the sequence uo, u1, satisfies p(x > n). show that the (1- s)u(s) = 1 - gx(s), whenever the series defining these generating functions converge.