A family buys a car for $20,000. The value of the car decreases about 20% each year. What is the car worth atter 6 years?

Ineed someone to me answer my question i have to have this done and knocked out

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3? f(x) = (x + 3)2 + 3 f(x) = (x + 3)2 − 6 f(x) = (x + 6)2 + 3 f(x) = (x + 6)2 − 6

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?