TEMATICS 7 WEEK 3 & 4 N: SCORE: Let x be any real number. Find the value of the expression x +7 if 1. X=6 4. X= -7 2. X= -9 5.x = 3. X = 5 Evaluate each expression using the values a = 2, b = 3 and c= -2. 1. 5a - 6 4. a-c 2. b +7 5. a + b c 3. 2c +b Perform the indicated operation of each set of polynomials. M A 1. 3(a + b) + 4(a + b) 2. 14y - 8y