Plug in x.
3+y=8
Subtract 3 on both sides. (do the inverse of addition; which is subtraction)
y=5
Check your answer.
3+5=8
8=8
That checks out! y is definitely 5.
I hope this helps!
~kaikers
Answer:469 million
Step-by-step explanation:
Given
The population of a country at t=1900 is 420 million
and P'(t) is a constant therefore P(t) is a linear function of time
assuming P(t)=7t +c
at t=0 i.e. 1900 at starting Point P(t)=420 million
i.e.


Thus 

Thus at 1907 Population is 469 million
P'(t)=7 indicates that growth rate of Population is constant equals to 7 billion
Answer:
y=4x-8
2
Step-by-step explanation:
that is that givin