Andy wants to rent a limousine to go to the prom, but he cannot afford it by himself. (He also doesn't want to go to the prom alone!) He decides to
invite some
friends to share the cost of the rental. The limo costs $400 to rent, and each person
who rides requires a $10 insurance fee (in case someone spills an orange Fanta in the
car).

a) Write a function c(x) that models the total cost of the rental in terms of x, the number of people going to the prom.

b) Write a new function p(x) that models the cost for each to the prom.

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step-by-step explanation:

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

you have to put the graph on here with the question

step-by-step explanation:

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.