Solution:
we have been asked to find
The expression is equivalent to 
we can simplify the given expression as below

Hence the simplified expression , equaivalent to the given expression is 1/2.
Aos= -b/2a so plunin your numbers and you'll get the AOS so you can find the vertex
In order to make

a mixed number you have to do division.

. Check:

. Therefore,

as a mixed number is

. Hoped I helped. :)
Yes its correct you did well :)
Answer:The answer is 70$
Step-by-step explanation: 12x5 which is dollars per rose is 60. 60$ is how much the roses costs. Since it is one delivery, there is a 10$ fee. 60$+10$= 70$