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help asap please. suppose c and d cary inversely, and d = 2 when c = 17. a. write an equation that models the variation. b. find d when c = 68. what i have so far is d = k/c 2 = k/17 k = 2(17) = 34 ^^ is that all or do i do more? i’m not so sure

consider the infinite geometric series n=1 -4(1/3)^n-1 . i need help with writing the first four terms of the series and finding the sum if it has a sum.

no, the problem that i have has Σ with an infinite sign and n = 1. after it it has -4(1/3)^n-1