Kee’s catering charges $100 to cater a party for 15 people and $12 for each additional person. what is the constant rate of change and the formula? (y = mx or y=mx+b)

The cost for a party here is the base fee, plus charges for any additional guests.

So we know for a 15-person party, the price is going to be $100. That's a flat (constant) cost.

We know that for each additional person, we add $12. So for  more people, the cost is $.

Since 100 is constant here, we make that our y-intercept. Even with no additional guests, the cost is still $100.

We add to write . 12 is the constant rate of change (slope).

Not sure what the question is but i hope this x = years100 * x

Yes it is the statement is precise