Abag contains a total of 100 black and white marbles without looking a marble is chosen record and placed back in the back the student records eight black marbles and two white marbles predict the number of black marbles in the bag

Three coins are flipped. what is the probability that there will be at least two tails?

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.