What is 10% of 400.00

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)