Please explain how to do this
let no of feets= fno of seconds=sf directly varies as sf=kswhere k is the constant46.93=k1k=46.93the formula connecting them= f=46.93swhere f=? and s=1.8f=46.93 x 1.8f=84.474.therefore the giraffe can run 84.474 feets in 1.8 seconds