Caleb was building a birchhouse. He needed 2 boards that were each 6 inches long and one board that was 18 inches long. What was the total lenghth of the boards that he needed.

30 inches

Step-by-step explanation:

2 boards that were each 6 inches long

The key word is each because this represents multiplication

2 × 6 = 12

1 board that was 18 inches long

1 × 18 = 18

Now we add the two numbers together to find the total length of boards needed

12 + 18

30

Don't forget to include units in your final answer

30 inches

he earned 78.75 in interest.

step-by-step explanation: