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Give examples of three real-world quantities that could be represented by a vector and three quantities that
could be represented by a single real number. Explain why some quantities can be represented by a number
and others must be represented by a vector.
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Q48: <span class="ql-formula" data-value="\mathbf { u } =
Q50: <span class="ql-formula" data-value="\begin{array}{r}3 x-2 y \leq 6
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Q97: <span class="ql-formula" data-value="\cos x \csc x \tan
Q174: <span class="ql-formula" data-value="\mathbf { u } =
Q199: <span class="ql-formula" data-value="x=3-|t|, y=t-2,-6 \leq t \leq
Q219: Let <span class="ql-formula" data-value="\mathbf {
Q222: <span class="ql-formula" data-value="\sin 31 ^ { \circ
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