Which situation is best modeled by the equation 9+x=16 ? a. you have $16 left after spending $9 and some other amount. b. nine friends each pay the same amount to get into a theme park, and the total is $16. c. the price of a water bottle, $9 , was decreased by some amount to $16. d. you pay $9 for a burger and some amount for dessert for a total of $16.

You pay $9

$

9

for a burger and some amount for dessert for a total of $16

$

16

.

Step-by-step explanation:

d. You pay $9  for a burger and some amount for dessert for a total of $16.

We have the following equation:

So the variable of this equation is the amount of money. According to the statement we have that:

If we solve this equation, we have that:

So the dessert costs $7. Finally, you pay $16 for the burger and the dessert as follows:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.