Question

Answer this question

Answer 1

The answer is 18

Explanation:

`\left[\begin{array}{cc}2&3\\6&4\end{array}\right] \left[\begin{array}{ccc}4&2&1\\7&5&3\end{array}\right]`

`[2*4+3*7][2*2+3*5][2*1+3*3]\\\[6*4+4*7][6*2+4*5][6*1+4*3]`

`[8+21][4+15][2+9]\\\[24+28][12+20][6+12]`

`[29][19][11]\\\[52][32][18]`

`\left[\begin{array}{ccc}29&19&11\\52&32&18\end{array}\right]`

18 the only answer choice that appears.

Hope this helps!