
get rid of -2 by subtracting it from 21

Now you get your answer

Hope this helps! :)
Erica knits 39 on friday just add 21 and 18 then u get 39 hope i helped
Answer:
I think it would be 12
Step-by-step explanation:
Answer: y=-0.5x+4.5
Step-by-step explanation: y=mx+b, m is the slope = -1/2 or -0.5, and b is the y-int, which is 4.5