Last year, kevin opened an investment account with $8600. at he end of the year, the amount in the account had decreased by 23.5%. how much is this decrease in dollars? how much money was in his account at the end of last year?

A) find the derivative of the inverse to f(x) = 3x + sint at x 6. b) (cale) find the derivative of the inverse to f(x)+3sin at x 6. if x +2y -34, ind he behaviar of the cure at 4,.3), c) a. increasing, concave up d. decreasing, concave down b. increasing, concave down e. decreasing, inflection point c. decreasing, concave up