What is one way to add up 3-digit numbers?

do it like step by step down below

Step-by-step explanation:

123

+ 240

+ 300

= 663

With lining them up

Step-by-step explanation:

Say you have 357 + 872

You would position your numbers so that they line up then you add the numbers that line up with each other, if your number is 10 or more you need to carry the first didgit over above the next row if your number was 14 you would carry the 1 over above the next row then you would add that number to the multiplicated 2 other numbers.

       357

+      872

shift 4 units up, and 1 unit left.

it will translate f(x) = 3^x to g(x) = 3^(x+1) + 4