If A is the center of the circle which of these is/are radii

Ineed solving this problem h/8=-25 solve for h idk how to this can someone show me and also give an answer you

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

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?