With a problem? can you also thoroughly explain?

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

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.