Answer:
4P4 means the number of ways (permutations) of arranging 4 items from a collection of 4 items.
Step-by-step explanation:
Answer:

Step-by-step explanation:
A) 604.2
B) 609.9
C) 537.42
D) 542.49
This is a function where:
x - time in minutes;
y = f ( x ) - altitude of a plane in feet.
Max altitude = 35,000 feet
0.5 h + 2 h + 15 min = 30 min + 120 min + 15 min = 165 min
Domain:
x ∈ [ 0; 165 ]
Range:
y ∈ [ 0; 35,000 ]
The answer is b -9 < x < 12