2. Is this a rational expression? How do you know? State the domain restrictions on this expression. Show your work.
2x + 5
x - 7

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

If f(x) = 5х – 2 and g(x) = 2х + 1, find (f – g)(x).

Ashop has a sale that offers 20% off all prices. on the final day they reduce all the sale prices by 25% linz buys a ratio on the day. work out the overall percentage reduction on the price of the ratio