In government class, Nadia computed the amount of debt of the federal government after a third of it was paid in 1995. The calculator displayed the number 3.28E12. What is this number in scientific notation? (1 point)
3.28 * 10 ^ 12;
12 * 10 ^ 3.28;
3.28 * 10 ^ - 12;
3.28 + 10 ^ 12
The number 3.28E12 is in scientific notation as 3.28 * 10 ^ 12.
To convert a number to scientific notation, we write it in the form a × 10^b, where a is a number between 1 and 10 (inclusive) and b is an integer exponent.
In this case, the number is 3.28E12. To convert it to scientific notation, we observe that 3.28 is between 1 and 10, so a is 3.28. The exponent 12 indicates that we need to move the decimal point 12 places to the right to obtain the original number. Therefore, b is 12.
So, the number 3.28E12 in scientific notation is 3.28 × 10^12.
Therefore, the correct answer is: 3.28 * 10 ^ 12.