Answer:
first put them in order: 0,0,0,0,0,0,1,1,1,1,1,1,1,2,2,2,2,3,3,3,3,4,4
Step-by-step explanation:
then make a number like with the numbers 0 1 2 3 4 on it and put the amount of dots there are for that number
for example under 0 would be 6 0's because there are 6 0's
an = 12 -7(n-1)
an = 19-7n
The explicit formula for an arithmetic sequence is
an = a1 +d(n-1) where a1 is the first term and d is the common difference
a1 =12
We find d by taking the second term and subtracting the first term
d = 5-12
d = -7
We can simplify this
an = 12 -7n+7
may be 5 times is answer but I am not sure I have done 5 times I got like this
it has a volume of 1 cubic unit. its called a "unit block"