A plane flies 1640 miles in 4 hours. What is the average speed of the plane?

Step-by-step explanation:

If the plane flies 1640 miles in 4 hours use this formula for average speed (total distance)/(total time) the speed will be 1640m/4h. If it can go that fast in 4 hours then divide 4(hours) by 1640miles to get 410.

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )