COST OF A TAXI RIDE. The cost, in dollars, of a taxi ride in Windville is given by C(x)=0.80x+2.00, where is the number of miles traveled?

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Answer 1 · 2018-02-18T17:33:41

It will be the #x# bit

The #C# is just a name that is given to this particular mathematical structure of what is on the right of the =.

So when you have #C(x)# that structure is applied to #x# giving:
#C(x)=0.8x+2#

So when you have #C(s)# that structure is applied to #s# giving:
#C(s)=0.8s+2#

So for #color(red)(10)# miles

#color(green)(C(10)=0.8(color(red)(10))+2#

#color(green)(C(10)=8+2 -> 10)#

Note that #C(x)# only applies to the structure. I tend to state:

Set #y=C(x)# giving:

#y=0.8x+2#

That way you are linking the structure to the value of the answer of #y#

COST OF A TAXI RIDE. The​ cost, in​ dollars, of a taxi ride in Windville is given by C(x)=0.80x+2.00, where is the number of miles traveled?