Susie bought six pens at the office supply store and paid $4.14. larry bought a dozen of the same pens at the same store and paid $8.28.
scott went to this store and bought pens. he paid a total of $5.52. how many pens did he buy?

what do you need me to answer?

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