Six more than five times a number (x) is at least twenty-one

Name the quadrilaterals that have four equal sides.

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Susan is paying $0.30 per $100 on her $483,000 home in homeowners insurance annually. if her annual homeowners insurance premium is divided into twelve equal monthly installments to be included on each of her monthly mortgage payments of $2,128.00, what is her total monthly payment?