Is this just free points or is there a question
Answer:
0, 1, 3, 6, 10, 15, 21, 28, 36, 45
I just used my Ti 84
it is correct except for 3rd number
should be
-3
-6
-16
8
The answer is 4 let's make a equation to answer it 3*y=12 we need to get y simply multiply 1*3=3 2*3=66 is half way so we can double 2 to 4 4*3=12 so y=4. you only need 4 boards to complete the wall.