Note: I assume that the 3rd step in the sequence is "c+100=200", otherwise there is no clear answer to the question.
Answer:
e + 10000 = 20000
Step-by-step explanation:
At each step, we see that every explicit number in the equation is multiplied by 10. In fact, the first equation is
a + 1 = 2
Then:
1 is multiplied by 10, becoming 10
2 is multiplied by 10, becoming 20
So the next equation is
b + 10 = 20
And so on;
the last equation we have is
d + 1000 = 2000
So to obtain the following equation, we have to multiply both numbers by 10:
[tex]1000 \cdot 10 = 10000\\2000 \cdot 10 = 20000[/tex]
And we get
e + 10000 = 20000
