Final answer:
Correctly formatted scientific notation includes options a, c, d, and e. The correct format has a single non-zero digit to the left of the decimal followed by multiplication by 10 raised to an exponent.
Step-by-step explanation:
To properly identify which options are in correctly formatted scientific notation, we must check if each number has a single non-zero digit to the left of the decimal point, followed by any other digits, then multiplied by 10 to a power. Here are the correct choices:
- a. 4.532 × 10⁻⁹
- c. 6.1 × 10¹¹²
- d. 8 × 10⁶ (Although typically, the multiplication is indicated by ×, not x)
- e. 9.31 × 10⁰⁻⁷
For b, 6÷10⁶ is not formatted properly because it uses the symbol ÷ which does not indicate multiplication. For f, 0.802 × 10⁴, the number 0.802 should be written as 8.02 to be in correct scientific notation. The correct format would be 8.02 × 10³.