The sequence 6, 18, 54, 162, … shows the number of pushups kendall did each week, starting with her first week of exercising. (a) what is the recursive rule for the sequence? (b) what is the iterative rule for the sequence?

The iterative rule for the sequence istn = 6*3^(n - 1)the recursive rule i find to be a little harder, but it is very useful in computer science. f(n) = 3*f(n - 1) so if you now what f(n - 1) is then you can find f(n).  so for f(1) we have 6for f(2) we have f(1) * 3f(2) = 6 * 3 = 18for f(3) we havef(3) = 3* f(n - 1)f(3) = 3* f(2)f(3) = 3*18f(3) = 54

I’m confused what’s happening

The answer is c because you turn 17.5% into a decimal which gives you .175 then you times that by $361.35 which gives you 63.23625 but then you round that which gives you 63.24. then you at 63.24 pulse 361.35 and you round it which gives you $425