A painter can paint 180 square feet in 1/2 an hour. How many square feet can the painter paint in 1 1/2 hours? (UNIT RATES QUESTION NEED ASAP)

After surveying students in her homeroom, katie decided to use a number cube to predict the probability that a randomly chosen student in her school planned to stay after school today for extracurricular activities. in katie’s simulation, a roll of 1 represents staying after school, while rolls of 2, 3, 4, 5, or 6 represent leaving school at the end of classes. according to katie’s model, what is the probability that three randomly chosen students will all stay after school for extracurricular activities today?