Hey there! So, to find out how much each bracelet should cost, let's take a look at Sara's equation. She's got "15x - 28.50 = 99", where x is the cost of each bracelet.
Let's start by adding 28.50 to both sides of the equation, to isolate the 15x on one side. That'll give us "15x = 99 + 28.50" (which is like 127.50, you know?).
Next, we're gonna divide both sides by 15 to solve for x, 'cause x is what we're looking for. That's like "x = 127.50 ÷ 15", which gives us $8.50.
So, to make that sweet profit of $99, Sara should charge $8.50 per bracelet. Hope this helps, fam!