Answer:
a. 2x +5
b. Pic attached
c. f(4) = 2•4 +5
f(4) = 8 +5
f(4) = 13
d. Domain: all the real numbers
Range: all the real numbers
To find the
![x_i](https://tex.z-dn.net/?f=x_i)
intercept, set
![x_j=x_k=0](https://tex.z-dn.net/?f=x_j%3Dx_k%3D0)
. By this I refer to the following procedure.
x-intercept: Set
![y=z=0](https://tex.z-dn.net/?f=y%3Dz%3D0)
, then you're left with
![4x=60\iff x=15](https://tex.z-dn.net/?f=4x%3D60%5Ciff%20x%3D15)
. Then the x-intercept is
![(15,0,0)](https://tex.z-dn.net/?f=%2815%2C0%2C0%29)
.
y-intercept: Set
![x=z=0](https://tex.z-dn.net/?f=x%3Dz%3D0)
, then
![-6y=60\iff y=-10](https://tex.z-dn.net/?f=-6y%3D60%5Ciff%20y%3D-10)
. The y-intercept is
![(0,-10,0)](https://tex.z-dn.net/?f=%280%2C-10%2C0%29)
.
z-intercept: Set
![x=y=0](https://tex.z-dn.net/?f=x%3Dy%3D0)
, then
![-5z=60\iff z=-12](https://tex.z-dn.net/?f=-5z%3D60%5Ciff%20z%3D-12)
. The z-intercept is
![(0,0,-12)](https://tex.z-dn.net/?f=%280%2C0%2C-12%29)
.
1. 40/8 = 45/9
2. 42/14 = 15/5
3. 14/2 = 56/8
4. 8/4 = 26/13
Answer:
there are 1250 readers
Step-by-step explanation:
r = readers
4 percent of readers sent letter = 50 recieved letters
r * 4 percent = 50
r * .04 =50
divide by .04 on each side
r = 50/.04
r =1250
-4+2= -2p and -2+3=1
so the answer is -2p+1