Answer:
b) (0,infinity)
Step-by-step explanation:
You can look at the graph and see it starts when x=1, and continues forever in the positive direction.
<span>C. 5x – 1 im possitive</span>
Answer:
the last one
Step-by-step explanation:
Answer:
C. $25
Step-by-step explanation:
We will find,
The slope of the function using
.
Taking the points (1,40) and (2,55).
Slope = ![\frac{55-40}{2-1}](https://tex.z-dn.net/?f=%5Cfrac%7B55-40%7D%7B2-1%7D)
i.e. Slope = ![\frac{15}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B15%7D%7B1%7D)
i.e. Slope = 15
Substituting the slope and point (1,40) in the equation
,
We have, ![40=15\times 1+b](https://tex.z-dn.net/?f=40%3D15%5Ctimes%201%2Bb)
i.e. ![b=40-15](https://tex.z-dn.net/?f=b%3D40-15)
i.e. b= 25
Thus, the equation of the linear function is
.
<em>This linear function represents the cost of the comic book since Lucy purchased it, where x= years.</em>
So, the initial value of the comic book is when x= 0.
So,
i.e. y= 25
Hence, the cost of the book when Lucy purchased it was $25.
Answer:
56
Step-by-step explanation:
You add 91 and 33 and you get 124. Subtract 180 and 124 to get 56.