Answer:
24
Step-by-step explanation:
The number line should read 18, 24, 30, 36, 42. There is a spacing of 6 units between each tick mark.
Good luck.
Hope this helps!
Let

be the number of strawberry cupcakes, and

the number of chocolate cupcakes.
From our problem we know that the total number of cupcakes is 180, so

. We also know that the number of chocolate cupcakes is eighteen more than twice the number of strawberry cupcakes, so

, or solving for

:

.
Know we have our system of equations:

We can conclude that the correct answer is <span>
B. c + s = 180 c = 2s + 18.
Lets solve our equations to find how many cupcakes of each they have:
from our second equation we know that </span>

; lets replace that value in our first equation to find the number of strawberry cupcakes:




<span>Now that we know the number of strawberry cupcakes, lets replace that value in our second equation to find the number of chocolate cupcakes:
</span>



As a bonus, we can conclude that the <span>math club have 126 chocolate cupcakes and 54 strawberry cupcakes. </span>
Answer: D
1/2x-1+4=x
1/2x-x=-3
-1/2x=-3
x=6