Ineed to know the answer for 15, if you can show your work

The answer is: D. 6.9 x 10^5

Step-by-step explanation:

To find the answer, you simply need to convert the scientific notation into normal notation and then divide the largest value by the smallest value.

Scientific Notation             Normal Notation

3.45 E 9                              3,450,000,000

0.5 E 4                                5000

Divide these values and you get:

690,000

or

6.9 E 5

where is the figure

1st integer x

2nd integer x+1

3rd integer x+2

4th integer x+3

x+x+1 +x+2+x+3 =74

combine like terms

4x+6 = 74

subtract 6 from each side

4x = 68

x = 17

the integers are 17,18,19,20