To avoid a storm, a passenger-jet pilot descended 0.18 mile in 0.4 minute. What was the plane's average
change of altitude per minute?

The plane's average  change of altitude is 0.45 miles per minute

Step-by-step explanation:

We have,

a passenger-jet pilot descended 0.18 mile in 0.4 minute.

It is required to find the plane's average  change of altitude per minute.

It means we need to find the average speed. It can be calculated as :

So, the plane's average  change of altitude is 0.45 miles per minute.

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

4x and 6y

im not sure though