First remember that sum means to add. now think about the equation. we need to find 3 numbers that equal 159 when added together. And they are all consecutive odd numbers. so let's call the first number X. the second number would be X+2 since we have to jump over 1 even number. The third number would be X+4 since we have to jump over 2 even numbers. so now an equation to represent this would be X+(X+2)+(X+4)=159. Add like terms, and remember order of operations. if you need help getting the answers leave me a comment.
The speed of earth will be found as follows: speed=distance/time distance=93 million time=365 speed=(93)/365=254, 794.5205 mi/day thus distance moved for 8 days will be: distance=speed*time =(254794.5205)×8 =2,038,356.164 miles
