Answer:
x=2
Step-by-step explanation:

Add 14 to both sides

Square root it
x=2
Answer:
Step-by-step explanation:
30 minutes UoU
Every 10 minutes he finishes 20% of the book case.
so In 10 minutes he will have 50% done, In 20 minutes 60%, in 40 minutes 100%
Answer:
b
Step-by-step explanation:
Answer:
3x-21
Step-by-step explanation:
3*x+3*(-7)=3x-21