U set up an equation: 80 x 8/5
Then u can cross multiply bc 5 goes into 80
It goes into 80 exactly 16 times
So new equation: 16 x 8
Multiply that out and u get 128
I think it's 2,5,6 because a rational number is a number that can be put in a fraction.
Examples:
3/7 (3 over 7)
-2/5 (-2 over 5)
And 4, which can be put as 4/1 (4 over 1) in fraction form
Her estimate is reasonable because there are 12 months in a year. 12×40 is 480. 480 is pretty close to 474.72
I believe the answer is -18.
m= negative four thirds (-4/3)