Change the following percents to fractions and reduce

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

Factor and solve to find roots x squared -x - 90 =0

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal