1. Write a cost function for each situation. Identify all variables used. (a) A chain-saw rental firm charges $12 plus $1 per hour.
(b) A trailer-hauling service charges $445 plus $2 per mile.
(c) A parking garage charges 50¢ plus 35¢ per half-hour.
(d) For a one-day rental, a car rental charges $44 plus 28¢ per mile.

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step-by-step explanation:

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

hi there!

question 1 answer: p/q can be terminating when q = 5^m * 2^n

question 2 answer: -1 and -1

question 3 answer: -4

question 4 answer: 5/12

hope this : )