You are preparing a presentation to be given in a large classroom. You are using a computer to develop your presentation with the monitor 25ft from the furthest audience member. In order for the audience to easily read each character used in the presentation, what size Arial font should you use? Visually illustrate your solution approach and show all calculations used to get the solution

Oz makes lion food out of giraffe and gazelle meat. giraffe meat has 18 grams of protein and 36 grams of fat per pound, while gazelle meat has 36 grams of protein and 18 grams of fat per pound. a batch of lion food must contain at least "46,800" grams of protein and 70,200 grams of fat. giraffe meat costs $1/pound and gazelle meat costs $2/pound. how many pounds of each should go into each batch of lion food in order to minimize costs? hint [see example 2.]