Manny is a plumber and charges $50 when he visits a client and $30 per hour for every hour he works. His bill can be expressed as a function of hours, x, with the function f(x) - 50 +30x which statement explains the meaning of the Inverse of the function?
А
Cost per hour as a function of the total bill
B
Total bill as a function of the number of hours
С
Number of hours as a function of the total bill
D
Total bill as a function of the cost per hour

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

true

step-by-step explanation:

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