Final answer:
To convert the number 45,621.4285714 into scientific notation, move the decimal point and multiply by 10 raised to the appropriate power. To determine the time it would take to travel from Earth to Saturn, divide the distance by the speed of the space shuttle.
Step-by-step explanation:
To convert the number 45,621.4285714 into scientific notation, you need to move the decimal point so that there is only one non-zero digit to the left of the decimal point. In this case, you would move the decimal point four places to the left, resulting in 4.56214285714. Then, multiply this number by 10 raised to the power of the number of places you moved the decimal point. In this case, that would be 10^4. So, the number 45,621.4285714 in scientific notation is 4.56214285714 x 10^4.
To determine how long it would take to get to Saturn from Earth via a space shuttle that travels at 28,000 kilometers per hour, you would divide the distance between Earth and Saturn by the speed of the space shuttle. The distance between Earth and Saturn is approximately 1.43 x 10^12 meters, which is equivalent to 1.43 x 10^15 kilometers. Dividing this distance by the speed of the space shuttle (28,000 kilometers per hour) gives you the time it would take to travel from Earth to Saturn.