Answer:
7 (g-8)
Step-by-step explanation:
this is your answer
1×5 or 5×1 would be a factual of it
It should be 19 because originally, it would be 910, but then add 16 more 0's, and 16 + 3 = 19 (and the three is from here -------^)!
Check this out ->:https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=91*10%5E17
and https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#safe=strict&q=91000000000...
They equal.
2x+4=3x+1 they've substituted y =2x+4 into the second eq.
