Answer:
Step-by-step explanation:
11.04 = 10(1.02)^n
1.104 = 1.02^n
ln 1.104 = ln 1.02^n
ln 1.104 = n ln 1.02
n = ln 1.104/ ln 1.02
n = 4.99630409516
4.99 can be rounded to 5.
So a reasonable domain would be 0 ≤ x < 5
PART B)
f(0) = 10(1.02)^0
f(0) = 10(1)
f(0) = 10
The y-intercept represents the height of the plant when they began the experiment.
f(1) = 10(1.02)^1
f(1) = 10(1.02)
f(1) = 10.2
(1, 10.2)
f(5) = 10(1.02)^5
f(5) = 10(1.1040808)
f(5) = 11.040808
f(1)=10(1.02)^1
f(1)=10.2
Average rate= (fn2-fn1)/(n2-n1)
=11.04-10.2/(5-1)
=0.22
the average rate of change of the function f(n) from n = 1 to n = 5 is 0.22.
Given:
The function is
![m(x)=x^2-17x](https://tex.z-dn.net/?f=m%28x%29%3Dx%5E2-17x)
To find:
The inverse of the given function.
Solution:
We have,
![m(x)=x^2-17x](https://tex.z-dn.net/?f=m%28x%29%3Dx%5E2-17x)
Substitute m(x)=y.
![y=x^2-17x](https://tex.z-dn.net/?f=y%3Dx%5E2-17x)
Interchange x and y.
![x=y^2-17y](https://tex.z-dn.net/?f=x%3Dy%5E2-17y)
Add square of half of coefficient of y , i.e.,
on both sides,
![x+\left(\dfrac{-17}{2}\right)^2=y^2-17y+\left(\dfrac{-17}{2}\right)^2](https://tex.z-dn.net/?f=x%2B%5Cleft%28%5Cdfrac%7B-17%7D%7B2%7D%5Cright%29%5E2%3Dy%5E2-17y%2B%5Cleft%28%5Cdfrac%7B-17%7D%7B2%7D%5Cright%29%5E2)
![x+\left(\dfrac{17}{2}\right)^2=y^2-17y+\left(\dfrac{17}{2}\right)^2](https://tex.z-dn.net/?f=x%2B%5Cleft%28%5Cdfrac%7B17%7D%7B2%7D%5Cright%29%5E2%3Dy%5E2-17y%2B%5Cleft%28%5Cdfrac%7B17%7D%7B2%7D%5Cright%29%5E2)
![[\because (a-b)^2=a^2-2ab+b^2]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%28a-b%29%5E2%3Da%5E2-2ab%2Bb%5E2%5D)
Taking square root on both sides.
![\sqrt{x+\left(\dfrac{17}{2}\right)^2}=y-\dfrac{17}{2}](https://tex.z-dn.net/?f=%5Csqrt%7Bx%2B%5Cleft%28%5Cdfrac%7B17%7D%7B2%7D%5Cright%29%5E2%7D%3Dy-%5Cdfrac%7B17%7D%7B2%7D)
Add
on both sides.
![\sqrt{x+\left(\dfrac{17}{2}\right)^2}+\dfrac{17}{2}=y](https://tex.z-dn.net/?f=%5Csqrt%7Bx%2B%5Cleft%28%5Cdfrac%7B17%7D%7B2%7D%5Cright%29%5E2%7D%2B%5Cdfrac%7B17%7D%7B2%7D%3Dy)
Substitute
.
![m^{-1}(x)=\sqrt{x+(\dfrac{189}{4}})+\dfrac{17}{2}](https://tex.z-dn.net/?f=m%5E%7B-1%7D%28x%29%3D%5Csqrt%7Bx%2B%28%5Cdfrac%7B189%7D%7B4%7D%7D%29%2B%5Cdfrac%7B17%7D%7B2%7D)
We know that, negative term inside the root is not real number. So,
![x+\left(\dfrac{17}{2}\right)^2\geq 0](https://tex.z-dn.net/?f=x%2B%5Cleft%28%5Cdfrac%7B17%7D%7B2%7D%5Cright%29%5E2%5Cgeq%200)
![x\geq -\left(\dfrac{17}{2}\right)^2](https://tex.z-dn.net/?f=x%5Cgeq%20-%5Cleft%28%5Cdfrac%7B17%7D%7B2%7D%5Cright%29%5E2)
Therefore, the restricted domain is
and the inverse function is
.
Hence, option D is correct.
Note: In all the options square of
is missing in restricted domain.
The answer is C 9/2 x 1/3
X is equal 25 degrees. Line ac goes though the parallel lines. So bcd is x. Cdb is 180-50 equals 130. All angles add to 180. 180-130 equals 2X. So x equals 25.