Final answer:
The number 6,750,000 can be displayed in scientific notation as 6.75 x 10^6.
Step-by-step explanation:
The number 6,750,000 can be displayed in scientific notation as option A) 6.75 x 10^6. To convert a number to scientific notation, we need to move the decimal point to the left so that there is only one non-zero digit to the left of the decimal point. The number of places we move the decimal point determines the exponent. In this case, we move the decimal point 6 places to the left, giving us a coefficient of 6.75 and an exponent of 6.