A restaurant bill is $84.97 estimate a 20% tip

A 20% tip of $84.97 is $12.75 the total would then be    $97.72

Step-by-step explanation:

three-fourths of an hour

36÷48=0.75

0.75=

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