Fifteen players , 2 coaches , anf 21 parents attened this year's sports banquey. the cost of each meal was $12.00 plus 5% (0.05) sales tax. what was the total cost of food for the

$488.80

Step-by-step explanation:

first add all of the people together and mulitply $12

then multiply 456 by 0.05 then add that number to 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