The number of birdhouses Ben can make varies directly with the amount of time he spends making the birdhouses. He can make 4 birdhouses in 112 hours. How many birdhouses can he make in 9 hours?
[tex]let \: number \: be \: n \: and \: time \: be \: t \\ n \: \alpha \: t \\ n = kt \\ 4 = 112k \\ k = \frac{1}{28} \\ equation = > n = \frac{t}{28} \\ n = \frac{9}{28} \\ n = 0.32 \approx0 \: bird \: houses[/tex]