This question is asking u to convert the number into scientific notation. pretend there's a decimal behind the last zero. move that decimal in between 3 and 4. and count how many digits u went. it's 14. so 3.48 X 10^14
so verbally it's three and forty-eight thousandths times 10 to the fourteenth power. <span />
Number 1 is C, i think number 2 is A but i’m not sure, number 3 is C