You have 1200 pencils and you order more when your down to 500
So take 1200 - 500 to find how many pencils will be sold before you reorder.
1200 - 500 = 700
Then you take 700 / 24 to find how many days until you reorder.
700 / 24 = 29.1666666666666... You have round up because on day 29 you will have 504 pencils left
So 30 days until the manager reorders
Replace x with -1, and y = 9
Therefore, (x²y)/-7 becomes (-1² · 9)/-7
-1² is just 1, and 1 × 9 is just equal to 9, so your final answer is -9/7.
when solved by factoring..
the answer is
x= 3/5, -2
15-t + 8t = -13
15 + 7t = -13
7t = -13-15
7t = -28
t = -4
4a + 11-a = 2
3a = 2-11
3a = -9
a = -3
