Write an equation for each translation of y=|x|. 10 units down

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.