Find all the possible arrays for each number. Use the array to help write the factors 13

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

What are the relative frequencies, to the nearest hundredth, of the rows of the two-way table? group 1: a 15 b 45 group 2: a 20 b 25