The ratio of money in Obi's wallet to Rudy's wallet one day was 5:2. Obi spent £20 that day.
Obi now had £8 less than Rudy.
How much did Rudy initially have

Which of those sequences is a geometric sequence

Which of the following is the graph of y= square root -x-3

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.