How do i find the exact value of cos 4pi/3?

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.

What is the simplified form of 400x100 ? o 200x10 o 200x50 0 20x10 • 20x50

The slope of the line whose equation is 2x - 1 = 0 is