Can someone PLEASE help me And I will give! I don’t know if it’s the 2nd or 3rd one

B

Step-by-step explanation:

Open dots represent everything leading up to a number, but do not include the number itself, and closed dots include the number. Therefore, it would need to be B.

4.6875 pounds

step-by-step explanation:

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b