7th grade math help me please

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1

What is the area of the wall surface of a room that is 16’ x 18’ with 9 ceilings?

12 3 4 5 6 7 8 9 10 time remaining 59: 02 charlie is evaluating the product of 0.09 and 0.05. he multiplies, and before placing the decimal, arrives at an answer of 45. after considering the decimal placement, what is charlie's final answer? 0.0045 0.045 0.45 0.4545 mark this and return