Algebra 1, find the solutions to the following systems of equations: -the sum of two numbers is 84. their difference is 20. write a system of equations that describes this situation. find the two numbers.

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

What is x and y intercepts for y=x+7