4x+8y=12
x=2
y = 1/2
Plug in each number
4(2)+8(1/2)=12
8+4=12
So basically, first just do this step by step, or subtract 38 from 26 first.
26 - 38 is basically -(38 - 26), or -12.
So then, it becomes -12 + (-3)
A - and a + becomes - because you're adding negative 3.
-12 - 3
Which then becomes -15.
Answer:
I'm going to get my friend to answer this for you
20000=1650e^(.5t)
12.121212=e^(.5t)
Ln(12.121212) = ln(e^(.5t))
2.49495 = .5t
4.98 = t
Rounding it will take approximately 5 years for the pop. to reach 20,000
