Which of the following expresses the 20th term in the geometric sequence with a first term of 7 and a fifth term of 112? A. 16(7)^20
B. 7(16)^20
C. 7(2)^19
D. 2(7)^19
E. 20(7)^2

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post

9.8? i'm not really sure