Whats the step by step answer to this equation i got -25 but its supposed to be positive not negative

25

Step-by-step explanation:

x = 25

Step-by-step explanation:

Given

- x = - 30 ( multiply both sides by 5 to clear the fraction )

- 6x = - 150 ( divide both sides by - 6 )

x = 25

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

answer: yes, since the line has a steeper rate of change than the exponential the y-values will be greater and they will only intersect one time.