1. Find the domain of the variable in the equation. Write the answer in interval notation. Y-4 " y+3 The domain is (Type your answer in interval notation.) 2. Determine whether the given equation is an identity. 3 3 3 x+4 3 Is 3 3 *7an identity? Choose the correct answer below. No Yes 3. Solve the following equation. 4[x + 3(5 -x)] = 2x + 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The solution set is { (Type an integer or an improper fraction.) O B. The solution is all real numbers. O C. There is no solution. 4. Solve the given equation for x. Assume a # 0 and b # 0. b[bx - 1) a(1 + ax) a * = (1) (1) O Rep. 8#b 1 O a - b #+6: b#a