I'm pretty sure you did it correctly
14% * 3.09 million = 432,600
Its is a function. mentally connect the dots. run your pencil across the paper parallel to the y-axis. if none of the points have touch the pencil it is a function. another way to check. look at the X value of all the coordinates. if they are all different its a function.
Your answer would be -18m-6n-30
Multiply 20 by 37. This is 740. Divide this by 2, this is 370. She will donate $370 to charity
