$540 in an account growing at a rate allowing the money to double every 9 years. How much money would be in the account after 21 years, to the nearest dollar?

An angle that measures between 90 and 180° is called a(,

What is the absolute value of the complex number -4-sqrt2i

1. are the corresponding angles congruent 2. find the ratios of the corresponding sides 3. is triangle jkl congruent to triangle rst? if so what is the scale factor