Paul and jamie are making necklaces to sell at a craft fair. the tools and other start-up materials cost $12.50. there is an additional cost of $3.25 per necklace. which equation can be used to find the total cost, c, of making a certain number of necklaces, n?

Total cost is represented by = c

Number of necklace is represented by = n

One time cost of tools and start-up materials = $12.50

Cost of making one/per necklace = $3.25

So, equation becomes:

cost = one time cost + 3.25(number of necklace)

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: