Assume \(0 < r < 3\). Below are five equations for \(x\). Which equation has the largest solution \(x\)?

\(\textbf{(A)}\ 3(1 + r)^x = 7\qquad \textbf{(B)}\ 3(1 + r/10)^x = 7\qquad \textbf{(C)}\ 3(1 + 2r)^x = 7 \textbf{(D)}\ 3(1 + \sqrt {r})^x = 7\qquad \textbf{(E)}\ 3(1 + 1/r)^x = 7\)

FlyEaglesFly Jul 30, 2019