The answer is c. Add all of the numbers on the right and then devide by five. Thd answer is C.
I think it’s 162000 because 5.4 * 10 ^4 = 54,000 in standard form and 54,000 * 3 = 162,000
First add the whole numbers;
5 + 3 = 8
then add the numerators( you could add them cause they have like denominators);
8/12 + 5/12 = (8+5) = 13/12
13/12 = 1 1/2
so your final answer would be: 9 1/2 (I added the whole numbers)