Is 5.6213 rational or irrational

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.

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?