Show work and explain with formulas.

20. find the first term in a geometric progression whose common ratio is 3 and whose 5th term is 324.

21. which term is 1/64 in the geometric progression 64, 32, 16,

22. in a geometric progression, the first term is 1875, the nth term is 48, the common ratio is 2/5. find the value of n.

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

2/3(-6y+9x) expand each expression using the distributive property

30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.