9.920 is the answer to your question
How many times Kevin's savings are al's savings is 30 more
0.32 cents for each unit because if you divide 7.68 by 24 it is 0.32
3x - 5 1/2 is the expression
In expanded form that would be 10,000,000 + 6,000,000 + 100,000 + 7,000 + 300 + 20