I have a few problems that i need help with... Find the inverse of the function and verify that it is the inverse by performing a composition of functions both ways... 1. f(x) = (2x + 1) / (x + 3) when i interchange x and y.. i can't seem to solve for y... because i have a y in the numerator and denominator... Draw the graph and determine the domain and range of the function. 2. y = 2 ln (3-x) - 4 when i graph this equation on a calculator.. it doesn't look like the range is all reals... but in the back of the book.. the answer says the range is "all reals"... why? 3. y = log2(x+1) same problem with range here.. doesn't look like all reals.. but it is... Solve each equation algebraically. 4. ex + e-x = 3 I can't seem to work this out anyway i try.. the x's end up canceling out.. and i lose my variable altogether 5. 2x + 2-x = 5 same problem here as the previous question and lastly... Solve for y. 6. ln (y - 1) - ln 2 = x + ln x I don't know where to go with that one at all... Thanks a lot in advance!