Find the volume of the hemisphere given the diameter is 20.7 ft. Use 3.14 for pi. Please round your final answer to the nearest tenth.

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Brady has a 20 year fixed rate mortgage for $215,500 with monthly payments of 1,305.89.the annual interest rate is 4%. what is the total cost of the principal and interest for this loan rounded to the nearest dollar

Math it's appreciated. (picture provided)