Answer: Choice C, 9.3 x 10^7 miles
notes
* 9.3 x 10^7 is 93,000,000 or the number "93 million". This is the approximate distance from earth to the sun (I believe the average distance)
* 500 seconds = 8.333 min = 8 min, 20 seconds
====================================================
Work Shown:
speed of light is roughly 1.86 * 10^5 miles per second, assuming you meant to put an exponent between the 10 and 5. This means that in 1 second, light travels roughly 1.86*10^5 miles (about 186 thousand miles)
Multiply this by 500
500 * (1.86 * 10^5)
(500*1.86)*10^5
930 * 10^5
(9.3 * 10^2) * 10^5
9.3 * (10^2*10^5)
9.3 * 10^(2+5)
9.3 * 10^7
This is the same as 93,000,000 or "93 million" after you move the decimal point 7 spots to the right.
