The rule g for the given transformation of the parent function.
f(x) = 5x + 2 -vertical shrink by ⅖

To vertically shrink a function, the whole function needs to be multiplied by the shrink factor.

f(x) = 5x + 2 -vertical shrink by ⅖

The whole function is the 5x +2

The shrink factor if 2/5

Multiply 5x+2 by 2/5:

g(x) = 2/5(5x +2)

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

72 is the answer to this problem