Welcome to Bytelearn!

Let’s check out your problem:

$$3.5 c-1.5 d \geq 50$$$\newline$Esa's Pastries sells cupcakes for $\$ 3.50$ each and donuts for $\$ 1.50$ each. The given inequality represents the difference, in dollars, between cupcake sales and donut sales on a typical day based on $c$, the number of cupcakes sold and $d$, the number of donuts sold. If Esa sold $200$ donuts on a typical day, what is the minimum number of cupcakes she sold on that day?