What is the lcm of two numbers that have no common factors greater than one give an example

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

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.

Find the slope of the line passing through a pair of points