9 - 18 + 36 - 72 + ... summation of nine times two to the power of n from n equals zero to infinity summation of nine times negative two to the power of the quantity n plus one from n equals zero to infinity summation of nine times two to the power of the quantity n plus one from n equals zero to infinity summation of nine times negative two to the power of n from n equals zero to infinity

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

the correct answer is c