please answer this aces and experts and if you just spam words as a answer i will report you to a moderator

9/10 divide by -3/15 as a mixed number

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?

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?