Tommy does a total of 308 push ups every week. How many push ups does tommy do a day

Use set buikder notation to represent the following set: {, -2, -1, 0}

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?