Answer:
-2.
Step-by-step explanation:
3n must be greater than 25 for the first negative term:
3n > 25
n > 25/3
n > 8 1/3.
So n = 9 and the first negative term is 25 - 3*9
= 25 - 27
= -2.
If 40% are boy and there are 12 boys
40% of girls would be 12 and another 20% is 6 so
You add 12+12+6=30 students total
1. we know she needs 3 packs of biscuits
2. Shop A you only need to pay for 2 packs
3. Shop B you only need to pay for 2 packs
4. Shop C you need to pay for all three
5. so we know C is out of the option.

so shop A and B will cost the least
A) 9 : 5
B) 5( 36/9) which is 20 ounces of lemonade concentrate