Question: Simplify the expressions by combining like terms. 1.5a - a b_22 4. -a + b. 2. (3x - 4y) + 2(2y - 6x) 5.

Simplify the expressions by combining like terms. 1.5a - a b_22 4. -a + b. 2. (3x - 4y) + 2(2y - 6x) 5. 0.5x 1.5x 3. 7b (3a - 8b) 2 6. (-) +3r +r Evaluate the expressions for the given value of the variable. 7. x + 2x - x = 1; x = 2 8. 5c6c; c= 5 10. 4a +7b- 3 + 6b; a = 2, b = -5 11. 12(1.1); t = 8 9. y + 4; y = 7 12. 3k+2(k-4) k+8 ; k = -3 12. Write an expression to model the situation: You have a summer job at a car wash. You earn $8.50 per hour and are expected to pay a one-time fee of $15 for the uniform. If you work x hours in your first week, how much money will you make in that week?

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