Question

to hear the
Self Practice 7B
Evaluate each expression for the given value of the variable.
1. (a) x + 7 for x = 2
(b) y - 7 for y = 10
(c) 5a for a = 2
(d) Ta - 3 for a = 1
(e) 9d for d=0
(f) 16 - 4y for y = 4
2. (a) y - 2x for y = 25, x=7
(b) 3a + 4b for a = -1, b = 2
(c) 5(v - x) for x = 1.5, y = 3.5
(d) 10x + z-y for x = 3, y = -5, z = 7
3. (a) 4r for x=3
(b) a + 3b for a = 2, b= -1
(c) 36 - 2r for x=4
(d) x + y for x = -1, y = -2
4 From the formula A = 3a + 50 - 80 - 29, find the value of A when a = 18, b = 0, and c= -3.
EQUATIONS



information I need solve this for me​

Answer 1

Answer:

1(a) x=2

     2+7=9

(b) y=10

    10-7=3

(c) a=2

    5*2=10

(d)a=1

   T*1 -3

   T-3

(e) d=0

    9*0=0

(f)y=4

  16-(4*4)

  16-16=0

2.(a) y=25, x=7

      25-2*7

      25-14=11

(b)a=-1, b=2

   3*-1 + 4*2

   -3+8=5

(c) x=1.5, y=3.5

   5(3.5-1.5)

   5*2=10

(d) x=3, y=-5 , z=7

    10*3+7-(-5)

    30+12

    42

3.(a) x=3

       4*3=12

(b)a=2, b=-1

   2+3*-1

   2+-3=-1

(c)x=4

  36-4*2

  36-8=24

(d) x=-1, y=-2,

    -1+-2=-3

4.A=3a+50-80-29

  a=18

  3*18+50-80-29

  54+50-80-29

  4