We are given that
points through which parabola is passing
(-1,1) and (1,-3)
so, we have
x1=-1 ,y1=1
x2=1 , y2=-3
we can find average rate of change by using formula
![A=\frac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
now, we can plug values
![A=\frac{-3-1}{1+1}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B-3-1%7D%7B1%2B1%7D)
![A=\frac{-4}{2}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B-4%7D%7B2%7D)
![A=-2](https://tex.z-dn.net/?f=A%3D-2)
So, the average rate of change from -1 to 1 is -2...........Answer
Answer:
Daniel (now) is 3 years old, (2 years ago) is 1 year old.
Kevin (now) is 6 years old, (2 years ago) is 4 years old.
Step-by-step explanation:
Now:
-Kevin: k = d + 3
-Daniel: d
2 years ago:
-Kevin: k - 2 = 4(d - 2)
-Daniel: d - 2
We have the equation:
(k - 2) + 2 = k
4(d - 2) + 2 = d + 3
4d - 8 + 2 = d + 3
3d - 6 = 3
3d = 9
d = 3
k = d + 3 = 3 + 3 = 6
Answer:
13525
Step-by-step explanation:
Given the equation :
y=25,450(0.81)^t
where (t) is the number of years since the truck was new ;
The value of y when t = 3 ;
Replace, t with 3 in the equation. And simplify
y=25,450(0.81)^3
Y = 25450 * 0.531441
y = 13525.17345
Worth after 3 years = 13525
IS THERE ANY MULTIPLE CHOICE?
No solution.
Solve for x.
x+1=x+2
>move x to the left side (combine variables)
> 0+1=2
>1=2 (1 doesn't equal 2, so no solution)