Answer:
The answer is -13.
Step-by-step explanation:
-9 + -4 = -13
Answer: She has to score a minimum of 92 marks to take her average to 80
Let the equation be
Three months total = 76 x 3 = 228
(x + 228) / 4 = 80
x + 228 = 80 x 4
x = 320 - 228
x = 92
24.9
See the image below:)
d
