Please help me with this show me the steps please

The objective for solving equations for variables is to get the x terms on one side and the non-x terms on the other side.

7) r + sx = t

sx = t - r (Subtract r from both sides)

x = (t - r) / s (Divide both sides by s)

8) m = 2x + n

m - n = 2x (Subtract n from both sides)

(m - n) / 2 = x (Divide both sides by 2)

x = (m - n) / 2 ("Flip" the equation, this is optional but this is how you usually write your answer, it will be in the form x = something.)

9) 4x - 5c = 3c

4x = 8c (Add 5c to both sides; 5c + 3c = 8c)

x = 2c (Divide both sides by 4; 8c / 4 = 2c)

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.