The book says the answer is negative infinity, but I keep getting positive infinity. The book doesn't show the steps just the answer. Could someone explain this to me?

This figure consists of a rectangle and semicircle. what is the perimeter of this figure use 3.14 for pi 60.84m 72.84m 79.68m 98.52m

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?