The sum of 3 consecutive odd numbers is 87. what is the smallest of the 3 numbers?

For the equations below which statement is true ? -2x=14 6x=-42

100 points, hi, i’m not sure how to get the equation from the graph and table.

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?