1. Expand (x - y)(2 + w -t) 2. Simplify m + 1 + 3 2 3. Find f-1(x) given that f(x) = 2x + 5. 4. Find a number r such that log; (5x + 1) = 2 5. Solve for t if In(21 + 1) = -4. (Give EXACT ANSWER...no decimal approximations)6. Write the expression below in the form G(x) = 142 q(a) : Where q is the denominator of the given expression and G and R are polynomials with deg R