Sam spent the day at the mall First he bought three mules for 300 each Later, he returned one mule After that, he bought one
jackhammer for $50 Write the total change to Sam's funds as an
Integer

2

step-by-2step explanation:

answer: h

step-by-step explanation:

i believe the answer is d.

hope it you! : d

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