The maximum value is actually the maximum of y
So, you don't need to care about the stuff inside cosine function,
Cosine function is always within the range of [-1,1]
So here, ymax = -1 + 6* 1 = 5
Anytime you find an equality that is always true, it means that there are infinitely many solutions.
If you arrive at 12=12, it means that the equations are always equal.
Answer:
- x ≥ -3
- x ≥ -3
Step-by-step explanation:
-15x + 60 ≤ 105
-15x ≤ 45
x ≥ -3
14x + 11 ≤ -31
14x ≤ -42
x ≥ -3
Best of Luck!