28x 4. b 4x . d 4x² 7 7x E. Independent Activity 3 Directions: Read each item carefully. Write the letter that corresponds to your answer on a separate sheet of paper. 1 Simplify 162 a а. C. 7 2 Simplify - a. 0 b. 2 C. X - 2 d. 1-2 302-39a+90 3. Simplify a2-3a-70 2a2-13 a+9 2a--13a+ a. b. d. 3(0-3) 4. Which of the following rational algebraic expressions is equivalent to 1? a-2 X 3a-3 a-7 +7 +7 150:2 8. d (a-2) 21a? 21a а. b. с 154: Sa- . 5 Which of the following rational algebraic expressions is equivalent to x=77 x+2 x² – 142 x-51-14 a b. x² +51-28 с. d. 344 11+2 x3+4x+4 x+1+4​