Answer:
(1/2,7/4)
Step-by-step explanation:
x=-b/2a
x=1/2
y=(1/2)^2-(1/2)+2
y=1/4-2/4+8/4
y=7/4
Answer:
Yes, the Y value has a direct relationship with the x value.
y = 5x + 5
Step-by-step explanation:
Answer:
13/19
Step-by-step explanation:
You make the number an improper fraction. Then you flip it around!
The correct answer is B) y=80000(1.03)ˣ.
Population growth is represented using an exponential equation. These equations are of the form
y = a(1+r)ˣ, where y is the total population, a is the initial population, r is the growth rate, and x is the amount of time.
We first find the growth rate. This is the percent of change, which is found by
amount of change/original amount
The amount of change from 2010 to 2011 is 82400-80000=2400. 2400/80000 = 0.03, so r = 0.03.
The growth rate from 2011 to 2012 is (84872-82400)/82400 = 0.03. Checking the others, they are very close to this as well, so we will use this as r.
Our value of a in the equation is the initial population, 80000. This gives us:
y = 80000(1+0.03)ˣ = 80000(1.03)ˣ