Wendi is selling her sculpture at an auction. the selling price goes up by $12.50 for each new bid. what is the selling price of wendi’s sculpture after each new bid?

just need proportional or not, and linear equation

Linear Equation:

y = 12.5x

This is assuming the first price is $12.50. Each new bid will add another $12.50 to it (so multiply by the amount of bids there are).

Proportional:

The amount that goes up is corresponding. This is true, for:

x = 1, y = 12.5 (x12.5)

x = 2, y = 25 (x12.5)

x = 3, y = 37.5 (x12.5)

etc. etc.

Where y is the selling price of sculpture:

This is true, for y stands for the total amount that it will cost the bidder.

Where x is the number of new bids:

x is the amount that of bids in all.

~

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

other answer is correct. i had used the radius of the radius somehow. a website: