Welcome to Westonci.ca, your go-to destination for finding answers to all your questions. Join our expert community today! Ask your questions and receive detailed answers from professionals with extensive experience in various fields. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

cell phone company Y charges a $10 start up fee plus $0.10 per minute, x. Cell phone company Z charges $0.20 per minute, x, with no start up fee. Which function represents the difference in cost between company Y and company Z?
A.) f(x) = -0.10x-70
B.) f(x) = -0.10x+10
C.) f(x) = 10x-0.10
D.) f(x) = 10x+0.10


Sagot :

B.
There is a 10 cent difference in the cost per minute, which is where the -.10x comes from. There is also a 10 dollar difference in the start up fees, which gives you the +10. 

So, if you were to choose Cell phone company Z, you would lose 10 cents per minute, but save gain 10 dollars at the beginning. -10x+10

Function that represents the difference in cost between company Y and company Z is

[tex]f(x)=-0.10x+10[/tex]

Given :

Cell phone company Y charges a $10 start up fee plus $0.10 per minute, x.

Lets frame equation for each company

Company Y

Charge y = cost per minute (x) + initial start up fee

[tex]y=0.10x+10[/tex]

Cell phone company Z charges $0.20 per minute, x, with no start up fee

[tex]y=0.20x+0[/tex]

Now we write the difference in cost

Subtract the cost to find the difference in cost

[tex]f(x)=0.10x+10-0.20x\\f(x)=-0.10x+10[/tex]

Function represents the difference in cost between company Y and company Z is

[tex]f(x)=-0.10x+10[/tex]

Learn more : brainly.com/question/16744057