EM-2142

Displaying data in matrices

E Math · Secondary 4 · Hard · Displaying data in matrices

A company sells three tour packages A, B and C at prices \$850, \200 and \950 respectively. The numbers of customers in the first and second half of the year are represented by matrix

P = \begin{pmatrix}18 & 25\\12 & 20\\9 & 15\end{pmatrix}

. The total earnings for each period are given by

C = AP

. What is matrix

A

$\begin{pmatrix}850 & 1200 & 1950\end{pmatrix}$
$\begin{pmatrix}850\\1200\\1950\end{pmatrix}$
$\begin{pmatrix}850 & 1200\\1950 & 0\\0 & 0\end{pmatrix}$
$\begin{pmatrix}850 & 1200\\1950 & 850\\1200 & 1950\end{pmatrix}$

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