Adanya makes and sells knit scarves. Next week she will pay a $25.25 fee for the use of a booth at a craft fair. She will charge $12.75 for each scarf she sells at the fair. Write an expression to determine Adanya's profit for selling s scarves after paying the fee for the use of the booth.

Joanne sells silk-screened T-shirts at community festivals and craft fairs. Her marginal cost to produce one T-shirt is exist2.50. Her total cost to produce 60 T-shirts is exist230, and she sells them for exist8 each. a. Find the linear cost function for Joanne's T-shirt production. b. How many T-shirts must she produce and sell in order to break even? c. How many T-shirts must she produce and sell to make a profit of exist900?

TechWiz Electronics makes a profit of $35 for each MP3 player sold and $18 for each DVD player sold. Last week, TechWiz sold a combined total of 134 MP3 and DVD players. Let x be the number of MP3 players TechWiz sold last week. Write an expression for the combined total profit (in dollars) TechWiz made from MP3 and DVD players last week. total profit (in dollars) =