Answer: 
Step-by-step explanation:
Given
The temperature on the ground is 
temperature drop observed is 
The height of the plane is 
The total increase in height per
is
units
Temperature drop is

The temperature at that altitude is

Answer:
9%
Step-by-step explanation:
We can start by changing this number to a fraction.

We know that 100 is a whole percentage
Therfore, we would get 9%
<h3>
Answer: B) -1/2</h3>
Explanation: Parallel lines have the same slopes, but different y intercepts.
Let x be the number of children
Let y be the number of adults
x + y = 4
4x + 7y = 19
Answer:
B (second graph from left)
Step-by-step explanation:
The function when x=0 will be 1 since any number to the zero exponent is 1. This means only B and D are options.
Because of the fraction, the values will be smaller and have a gentler slope. B is the solution.