Question

An 18-pound bag of dog food is $27. What is the constant of proportionality that relates cost in dollars, y, to the number ofpounds of dog food, x?A) 27B) 18C) 1.50D) 9

Answer 1

let

the constant of proportionality = k

`\begin{gathered} y=\cos t\text{ in dollars} \\ x=\text{pounds of dog food} \\ y=\text{ \$27} \\ x=18\text{ pounds} \\ 27=k18 \\ k=(27)/(18) \\ k=1.5 \end{gathered}`

The answer is C