Mathematics, 26.03.2020 16:16 zazy15
2. Suppose Ruben's friend, Terri, goes along with him to the store. Terri buys a bag of chips for 25 cents, two candy bars at 45 cents each, two packs of gum at 30 cents each, and a medium drink for 75 cents. a. Create Terri's quantity matrix Q and Terri's price matrix P for purchases. B. Use matrix multiplication to find the total cost QP of Terri's purchases.
Answers: 3
![a. Q[1\ 2\ 2\ 1]\\\\\\\ \ P\left[\begin{array}{ccc}25\\45\\30\\75\end{array}\right] \\\\\\\\b. 250 \ cents\\](/tpl/images/0565/1581/e06b8.png)
![P\left[\begin{array}{ccc}25\\45\\30\\75\end{array}\right]](/tpl/images/0565/1581/ca7ac.png)
![\ \ \ c\ \ cb \ \ g\ \ md\\Q[\ 1 \ \ 2\ \ 2\ \ 1]\\](/tpl/images/0565/1581/f9d4b.png)
![QP=[\ 1 \ \ 2\ \ 2\ \ 1]\left[\begin{array}{ccc}25\\45\\30\\75\end{array}\right] \\\\\\=[25 \ 90\ 60\ 75]\\\\=[25 +90+60+75]\\\\=[250.00]](/tpl/images/0565/1581/8e0eb.png)
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2. Suppose Ruben's friend, Terri, goes along with him to the store. Terri buys a bag of chips for 25...
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