Answer
a) 2 x + 3 = 13 - 5 x
7 x = 13 -3
7 x = 10

b) 6 + 4 x = 10 x + 26
6 x = 20


c) 6 x + 9 = 13/5 - x


d) 0.6 + 0.4 x = x + 2.6
0.6 x = -2


e) 3(2x + 3) = 13/5 -x
6 x + 9 = 13/5 - x


f) 4 x = -10 x + 20
14 x = 20

g) 15(2x + 3) = 13 - 5x
30 x + 45 = 13 - 5 x
35 x = -32

h)15(2x + 3) + 97 = 110 - 5x
30 x + 45 + 97 = 110 - 5x
35 x = -32

so , the solution of part c, e, g, h is same which is 
the solution of part a, f is same which is
Answer:
Slope of RS = 2
Step-by-step explanation:
Slope of a line passing through two points
and
is given by,
m = 
From the graph attached,
Vertices R and S have the coordinates as (3, -2) and (1, -6) respectively.
Slope of the line RS = 
= 
= 2
Therefore, slope of the segment RS is 2.
The answer is A. 50
2x + 40 = 140
2x = 140 - 40
2x = 100
x = (100 / 2 )
x = 50