Question

Driving on the highway, you can safely drive 70 miles per hour. Which of the following functions could be used to find how far you can drive in ‘h’ hours?A) D = 70 + hB) D = 70 hC) D = 70hD) D = h 70

Answer 1

From the the speed is 70 miles/hr, the distance will be D and the time becomes h hours.

Speed is given as

`\begin{gathered} speed=\frac{distance}{time\text{ }},\text{ so } \\ distance=speed* time\text{ } \end{gathered}`

This becomes

`\begin{gathered} distance=speed* time \\ D=70* h \\ D=70h \end{gathered}`

Hence the answer is option (C) D = 70h