Answer:
Wear is the modle i need the modle to answer
Step-by-step explanation:
Answer:
I mean what’s clever
Step-by-step explanation:
A1=-15
a2=a1+d→-4=-15+d→d=11
I believe it is the final choice because it correctly compares 2 sets of corresponding sides.
I'm assuming that you mean

because if you meant

then u would simplify and you couldn't make it the subject.
Under this assumption, we start with

We multiply both sides by 

We expand the left hand side:

We move all terms involving u to the left and all terms not involving u to the right:

We factor u on the left hand side:

We divide both sides by 
