Answer: Always positive
Step-by-step explanation: There is a strategy where if you are subtracting to different signs you change the last 2 signs Ex: 2-(-5) would be the same as 2+5
Answer:
Y=X
Step-by-step explanation:
the answer is b
15
C
If x = o then f(0) = 4(2) * 0 = 0
If f(x) = 4(2) 0 - 13
then f(x) = -13 at x = 0