Giving brainiest and 13 points! Please answer the following essay question in your own words:
Explain why the speed limit on a highway is an example of a unit rate. Give another example.

These speed limits and price rates are known as unit rates because they give us the rate per unit -- in the speed limits, the unit is hours -- in the prices, the unit is pounds. ... The speed limit of 55 miles per hour is the same as the ratio 55 miles to 1 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