13 x 6 = 78 it cant be multiplied anymore so it can go into 80 about 6 times.
You can try by plugging each ordered pair and seeing if the equation comes out true.
(5, 1)
2 * 5 - 1 = 9
That's correct so C is the correct answer.
Hi there!
1/4 is a rational number.
Any number that can be written as a fraction is a rational number.
~ Hope this helps you ~
