Use cylindrical coordinates. Evaluate ∫ ∫ ∫ x^2 dV, where E is the solid that lies within the cylinder x^2 + y^2=4, above the plane z = 0, and below the cone z^2 = 9x^2 + 9y^2.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

If $740 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in 7 years? use the continuous compound interest formula a = pert.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?