Answer:
Two of those figures have a vertex.
Step-by-step explanation:
Hope this helped Mark BRAINLIEST!!!
Answer:

Step-by-step explanation:
we have

step 1
Eliminate the parenthesis

The symbol of the term 3x is incorrect, must be positive instead of negative
so

Group terms that contain the same variable

Combine like terms

Original price×(1-discount price)=new price or sale price so
Put x in original price...x(1-45/100)=550
So the original price is 1000