Lily has $45 in her school lunch account. if she spends $2.50 each day, which graph represents lily's account balance, y, after she buys lunch for x days?

Step-by-step explanation:

Lily has $45 in her school lunch account.

Let the days she buys lunch be = x

And each lunch costs $2.50

So, the equation to know Lily's account balance 'y' will be :

OR in order,

The graph is attached below.

We can further see that $45 will go on for 18 days.

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

step-by-step explanation: