Answer:
The answer is 18
Step-by-step explanation:
[tex]\left[\begin{array}{cc}2&3\\6&4\end{array}\right] \left[\begin{array}{ccc}4&2&1\\7&5&3\end{array}\right][/tex]
[tex][2*4+3*7][2*2+3*5][2*1+3*3]\\\[6*4+4*7][6*2+4*5][6*1+4*3][/tex]
[tex][8+21][4+15][2+9]\\\[24+28][12+20][6+12][/tex]
[tex][29][19][11]\\\[52][32][18][/tex]
[tex]\left[\begin{array}{ccc}29&19&11\\52&32&18\end{array}\right][/tex]
18 the only answer choice that appears.
Hope this helps!
