find the slope of the line, given the points (2,1) and (6,3) show all your work. Do not convert into decimal if you have a decimal answer.

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

What value of x will make the triangles similar by the sss similarity theorem?