The answer would be:
5(-4) - 8
-20 - 8
-28
I think the answer is A.
It's probably wanting you to use pythagorean theorem.
Answer: 4 kilograms of dough and will continue preparing 1 kilogram of dough every hour.
Step-by-step explanation:
We call x the 4 points-worth problems and y the 3 points-worth problems
You know that x+y = 32
4x+3y = 111
You know that the difference from the x and y is 32 so write:
x = 32-y
Substitute at x the value of 32-y
4(32-y)+3y = 111
128-4y +3y = 111
-4y+3y = 111-128
-y = -17
y = 17