Its math again so sorry

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170

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