Steve can run 3.5 miles in 30 minutes. if steve increases his rate by 12 mile per hour, how far will he run in 2 hours?

can someone explain/show how to do this in the most simple way possible

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?