Line D and C because they are not parallel but distorted or unsymmetrical
Answer:
250
Step-by-step explanation:
Lets say the number is x so we can make an equation
If is at least 21, that means it has to be greater then or equal to it.
6+5*x>=21
You can subtract 6 from both sides
5*x>=15
Then divide both sides by 5
x>=3
You can conclude that the number is greater then or equal to 3.
Steve did it perfectly, because he got the common denominator first, then expanded and subtracted.
