Answer:
C. 5 7/8
Step-by-step explanation:
<span>r = 3 × v + 13
</span><span>r = 3 × 9 + 13
</span><span>r = 27 + 13
v = 40</span>
It's because a tenth means that you've divided it by 10. So if it's 20, it means you're multiplying tenths by 20, leaving you with 2 wholes.
For example, you have 2 cakes and you cut each into 10 slices, the slices are each one tenth of the whole cake, and in total there are 20 tenths.