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:

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

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