An electrician charges $80 an hour. his apprentice earns $42 an hour. the apprentice works on a job 3 hours less than the plumber. together they earn $850. how many hours did they each work?

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