Answer:
The function is 200+50t (t= # of months)
Step-by-step explanation:
The best way to do this is to look at the question, and see no matter what, we have to pay 200 dollars to start. After which, they charge 50 bucks a month. Knowing this, we can make a function using f(x). Let C(t)= cost. Included is that graph. So for these questions, we need to see that there is an independent and a dependent variable, and we need to see that cost is affected by time. Hope this helps.
26. 2x^2 +4x -10 = 0 (-4 + - (root(4^2 - 4*2*-10)))/2*2 =
(-4 + - (root(96)))/4
(-4 + (root(96)))/4 ≈ 1.45
(-4 - (root(96)))/4 ≈ -3.45
27. f(x) = 0 when any of the components that multiply together equal 0 for this function therefore x -2 = 0 x +3 = 0 x -5 = 0 so f(x) = 0 when x = 2, -3 or 5
28. It looks like it shows you how to do it
B is the answer but check if u can simplify it
Answer:
The answer is 2.
2 since 6/4=3/2
Step-by-step explanation:
Since your relation is a direct variation then the points on your line are of the form y=kx where k is the constant of variation (also called constant of proportionality)
If y=kx then y/x=k.
So all the points in this relation since it is a direct variation will be equal to y-coordinate/x-coordinate.
So we are going to solve this proportion:
![\frac{6}{4}=\farc{3}{x}](https://tex.z-dn.net/?f=%5Cfrac%7B6%7D%7B4%7D%3D%5Cfarc%7B3%7D%7Bx%7D)
Again I put y/x from each point. They should have same ratio because this is a direct variation.
Cross multiply:
![6(x)=4(3)](https://tex.z-dn.net/?f=6%28x%29%3D4%283%29)
![6x=12](https://tex.z-dn.net/?f=6x%3D12)
Divide boht sides by 6:
![x=\frac{12}{6}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B12%7D%7B6%7D)
![x=2](https://tex.z-dn.net/?f=x%3D2)
A. = 7/8
b. = 7/4 = 1 3/4
c. = 7/4 = 1 3/4
d. = 7/4 = 1 3/4
= b,c,d