Evaluate each expression for a = 9, b = -3, c = -2, d = 7. Showyour work.1. A -cd2. 2b3+ c2a+d−cb4. (a–b)2+ d(a + c)5. 4c –(b –a)ab-5a7. 2bc+ d(12 –5)8. B+ 0.5[8 –(2c + a)]Simplify each expression using the Distributive Property.9.5(2g –8)10.7(y + 3)11. -3(4w–3)12. (6r + 3)2Simplify each expression, showing all work.13.8(x + 1) –12x14.6w –7 + 12w –3z15.9n –8 + 3(2n –11)16.3(7x + 4y) –2(2x + y)17. (15+ 8d)(-5) –24d + d18. 9(b –1) –c + 3b + c19. 20f–4(5f + 4) + 1620.8(h –4) –h–(h + 7)3.6.

1) 23; -8; 19; 73; 4; -76; 61; -6

10g - 40; 7y + 21; -12w + 9; 6r+3

2) -4x +8; 18w -3z -7; 15n - 41; 17x+10y; -75 - 63d; 12b-9; 0; 6h -39

Explanation:

a = 9, b = -3, c = -2, d = 7

1. a -cd = 9 - (-2)(7)

= 9 + 14 = 23

2. 2b+ c = 2(-3) + (-2)

= -6 -2 = -8

3. 2a+d−cb = 2(9) + 7 -(-2)(-3)

= 18 +7 -(6) = 25-6 = 19

4. (a–b)2+ d(a + c) = (9-(-3))*2 + 7(9+(-2))

= (9+3)*2 + 7(9-2) = 12*2 + 7(7)

= 24 + 49 = 73

5. 4c –(b –a) = 4(-2) - (-3 -9)

= -8 - (-12) = -8+12 = 4

6. ab-5a = 9(-3) - 5(9)

= -27 -49 = -76

7. 2bc+ d(12 –5) = 2(-3)(-2) + 7(12-5)

= 2(6) + 7(7) = 12 + 49 = 61

8. b + 0.5[8 –(2c + 2a)]

= -3 + 0.5[8-(2*-2 + 2*9)]

= -3 + 0.5(8-(-4+18)) = -3+0.5(8-14)

= -3+0.5(-6) = -3-3 = -6

Using Distributive Property

9. 5(2g –8) = 5*2g - 5*8

= 10g - 40

10. 7(y + 3) = 7*y + 7*3

= 7y + 21

11. -3(4w–3) = -3*4w -3(-3)

= -12w + 9

12. (6r + 3) = 1(6r + 3)

= 1*6r + 1*3

= 6r + 3

2) Simplify each expression

13. 8(x + 1) –12x = 8x + 8 -12x

= 8x -12x + 8 = -4x +8

14. 6w –7 + 12w –3z

= 6w+12w –3z –7

= 18w -3z -7

15. 9n –8 + 3(2n –11)

= 9n -8 +6n -33 = 15n - 41

16. 3(7x + 4y) –2(2x + y)

= 21x +12y -4x-2y = 21x -4x +12y-2y

= 17x + 10y

17. (15+ 8d)(-5) –24d + d

= -5(15) -5(8d) -24d + d

= -75 -40d -24d +d

= -75 - 63d

18. 9(b –1) –c + 3b + c

= 9b -9 -c +3b +c = 9b +3b -c +c -9

= 12b -9

19. 20f–4(5f + 4) + 16

= 20f -20f -16 +16 = 0

20. 8(h –4) –h–(h + 7)

= 8h - 32 -h -h -7

= 8h -2h -32-7

= 6h -39

the answer to the question is punishment. or more specifically, positive punishment.

positive punishment occurs when a behavior is given a negative consequence for the individual doing the behavior.

sara no longer wants to ask questions (the behavior) because she is ridiculed by mr. smith (the punishment).

reinforcement is inaccurate because reinforcement always gives positive consequences for the individual doing the behavior, be it by introducing a pleasant consequence or removing an unpleasant one.