Write the name for the decimal value of the point of m ob the number line

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

Use the given information to determine the exact trigonometric value.