You multiply the whole number and the <span>denominator ( the bottom number in the fraction) and then add the answer of that to the numerator. Hope that helps! :) </span>
B) 12.75
Just add them all together
10+15+14+8+18+11+12+12+10+10+17+16=153
The devide the anser by the ammount of numbers you added together
153÷12=12.75
We have been given two ratios and we are supposed to compare our ratios whether they are proportional or not.
1. We will reduce our fractions to compare our ratios. Let us simplify each of our given fractions.

Let us divide numerator and denominator with greatest common factor. We can see that 21 is GCF of our ratio.

Now we will simplify our second ratio.

GCF of our fraction is 32. Upon dividing our fraction by 32 we will get,
We can see that our both ratios are similar.
2. Now we will find decimal values of our fractions.


We can see that
.
Therefore, we can say that our ratios are proportional.
B) the only factors a prime number has is 1 and itself.
Replace x in each equation and solve to see if it equals the Y value in the table.
Doing this for all 4 letters, the correct equation is B y =3x+4