Check the Wronskian determinant:

The determinant is not zero, so the solutions are indeed linearly independent.
45
5 divided by 5 equals 1
1 plus 4 equals 5
5 times 12 equals 45
Considering that 1 kilogram is equal to 1000 grams and he made 9 loaves of bread using 30 grams each time, that equates to 270 grams of olives. 1000 - 270 = 730. Your answer is 730 grams of olives remain. Hope this helped.
The answer is 30 I’m sure of it