Prove the validity of the limit lim x-> x_0 (ax+b)=ax_0+b by converting to a statement about sequences.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870