A schools enrollment in 2012 was 1234 now it is 1456 what does the expression look like that would help me find the percent change

A) (1,456-1,234) ÷ 1,456

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

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17