1. The problem asks to find the value of each expression using a number line for question 5. 2. Calculate each part step-by-step: a. $3 - 1 - 4 = (3 - 1) - 4 = 2 - 4 = -2$ b. $-2 - 1 - 3 = (-2 - 1) - 3 = -3 - 3 = -6$ c. $-3 + 1 + 4 = (-3 + 1) + 4 = -2 + 4 = 2$ d. $3 - 5 - 1 = (3 - 5) - 1 = -2 - 1 = -3$ e. $3 + 2 - 7 = (3 + 2) - 7 = 5 - 7 = -2$ f. $5 - 4 - 3 = (5 - 4) - 3 = 1 - 3 = -2$ g. $-8 - 2 + 2 = (-8 - 2) + 2 = -10 + 2 = -8$ h. $-1 - 2 - 4 = (-1 - 2) - 4 = -3 - 4 = -7$ i. $4 - 9 + 2 = (4 - 9) + 2 = -5 + 2 = -3$ 3. Each expression is evaluated by following the operations from left to right, using addition and subtraction on the number line. Final answers: a. -2 b. -6 c. 2 d. -3 e. -2 f. -2 g. -8 h. -7 i. -3