Answer:
c) 81.5
Step-by-step explanation:
Listing the 25 ages in crescent order:
60 61 62 63 64 65 66 68 68 69 70 73 73 74 75 76 76 81 81 82 86 87 89 90 92
The upper or third quartile's position is given by:

This means that the third quartile is the average between the 19th and 20th numbers:

The upper quartile is 81.5.
Answer:
r<0
Step-by-step explanation:
The exponential function
is
- a decay function, if

- an increase function, if

Thus, for the exponential function to be the exponential decay function the following must hold

Answer:
X=-2
Step-by-step explanation:
Let no =X
So 2x+4=0
2x=-4
X=-4/2
X=-2
So the answer is -2
Answer:
10x + 5y = 50
Step-by-step explanation: