Sarah went shopping for holiday presents. She bought gift ca…

Sarah went shopping for holiday presents. She bought gift cards and tree ornaments for her coworkers. The gift cards cost $10 each and tree ornaments cost $8.50 each. She buys a total of 46 presents and spends $427. How many gift cards and tree ornaments. Identify the variables, write the system of equations, solve the system of equations and write the answers clearly. 

Formulas:  Cost = Fixed Cost + (Variable Cost)xRevenue = (pr…

Formulas:  Cost = Fixed Cost + (Variable Cost)xRevenue = (price-demand)xProfit = Revenue – CostEntertainment 720 is a company that sells big speakers. The company has a fixed cost of $1200 and a variable cost of $65 per speaker. The company sells the speakers for $73. Part a) Find a cost function. Part b) Find the revenue cost. Part c) Find the profit cost. Part d) Determine the amount of profit earned selling 30 speakers.