Linear Functions

Margin per latte \2.80$;$2.80n - 240 = 300 \Rightarrow 2.80n = 540 \Rightarrow n \approx 192.86$, round up: 193. Closest option: actually answer 200 not exact. Recalc:$2.80(200) = 560 - 240 = 320 \ne 300$.$2.80(193) - 240 = 540.4 - 240 = 300.4$. Best: 193 not in options. Choose 200 as min for$\ge 300$.