Task - Ximera

$\newcommand{\arraycolsep}[3]{} \newcommand{\dd}[2][]{\frac{d #1}{d #2}} \newcommand{\pp}[2][]{\frac{\partial #1}{\partial #2}} \newcommand{\veci}{\vec{\hat{\bf\imath}}} \newcommand{\vecj}{\vec{\hat{\bf\jmath}}} \newcommand{\utan}{\vec{\hat{t}}} \newcommand{\unormal}{\vec{\hat{n}}} \newenvironment{amatrix}[1]{% \begin{bmatrix} }{% \end{bmatrix} }$

$\newenvironment {prompt}{}{} \newcommand {\ungraded }[0]{} \newcommand {\HyperFirstAtBeginDocument }[0]{\AtBeginDocument }$

Please answer the following question based on the table of values:

How fast should you drive a car to use fuel as efficiently as possible?

$\begin {array}{ll} \textrm {Speed (miles per hour)} & \textrm {Fuel economy (miles per gallon)} \\ 45 & 43 \\ 50 & 44 \\ 55 & 45 \\ 60 & 41.5 \\ 65 & 38 \\ 70 & 35 \\ 75 & 32 \end {array}$

45 miles per hour 50 miles per hour 55 miles per hour 60 miles per hour 65 miles per hour 70 miles per hour 75 miles per hour