Answer:
The correct answer by solving with the System of Inequalities is
Step-by-step explanation:
X = low-energy lamp
y = high-energy lamp
1) 4x + 5y
2) 120= 4x + 5y
The input is 7, so replace x in the equation with 7:
5 + |3-7|
Simplify:
5 +|-4|
The vertical bars mean absolute value, which means if the number is a negative value it becomes a positive value:
5 + 4
Output = 9
Answer:
60
Step-by-step explanation:
Is because when you have two negative -- signs it became positive
19 + 41 = 60