$7.22 would be the answer because 70% of 10.31 is what you are looking for which is 7.217 which is rounded to 7.22 I know this is right because I just learned this and I am in advanced math 6th grade.
Answer:
I think it is 5 + 2x
Step-by-step explanation:
Nine wholes with five twelves
9 5/12
