A new oil filter costs 180 and oil costs 134 per liter . Write equation for the C of an oil changes as a function of the number of liters of oil used (u): If Mr.Aquino's car requires 3.4 liters of oil , how much would change oil cost Mr. Aquino?

Question

zzr0ck3r · Answer

so we are going to have to pay 180 no matter what.
then we have to pay for each liter

knowing the form will be like this f(x) = mx+b

what do you think m is and what do you think b is?

anonymous · Answer

m is 134 and b is 3.4 ?

anonymous · Answer

then the answer would be 455.6 ? am i correct?

zzr0ck3r · Answer

we are going to pay 180 no matter what

f(x) = 180 then we are going to pay for each liter at 134 so

f(x) = 180 + 134x where x is the amount of liters.

zzr0ck3r · Answer

now we have the equation, now we plug in 3.4 for x to find f(3.4)

zzr0ck3r · Answer

if you dont understand, please ask a question.

anonymous · Answer

f(3.4)=180+134x

zzr0ck3r · Answer

put a 3.4 where you have an x

anonymous · Answer

f(3.4)=180+134(3.4)

zzr0ck3r · Answer

$f(x) = 180+134x$ so what ever we plug in for $x$ we plug in for $x$ everywhere.

$f(2) = 180+134*2\f(34343.43)=180+134*34343.43\f(\checkmark)=180+134*\checkmark\f(3.4) = 180+134*3.4$

anonymous · Answer

I don't get it . I'm not good in math.

anonymous · Answer

@Sakura22 
This is just like the previous question,

C=180+134u.
Where, C is the total cost and u is the number of liters of oil used.

So, it is given Mr.Aquino's car consumes 3.4 liters of oil,
Here, 3.4 is u and you have to find C.

So, C=180+(134*3.4)
      C= 180+455.6= 635.6


Understood?

anonymous · Answer

yeah. thank you again . :)