Answer:
6
Step-by-step explanation:
replace the variable with the information provided which will give you
x=4+6-4
solve
answer:6
The estimate of the circle would be 12ft
Answer:
4x^2 + 12x + 9.
Step-by-step explanation:
(2x+3)^2
= (2x+3)(2x+3)
= 2x(2x+3)+3(2x+3)
= 4x^2 + 6x + 6x + 9
= 4x^2 + 12x + 9.
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).