The answer is 72 because 604-72=532 and 532+72=604
Answer:
Round it to 1,000,000 or 956,000
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.