Answer:
I don't know but this question feels incomplete
First take the amount of drinks and popcorn needed then multiply the amount by the price then see if she has enough money when you finish the multiplying.
Yes it is the most simplified version
8x - 5(x - 3) = 18
8x - 5x + 15 = 18
3x = 18 - 15
3x = 3
x = 3/3
x = 1
Option C.
4. Overall, there are 45 students.
13 students achieved a mark over 65
= 29%
Therefore the answer is b. 29%
5. b is incorrect.
This is because retrievers account for 10% of the dogs, not 15%.
100%-(35% + 45% + 10%) = 10%