A well-driving crew drilled these distances into Earth's crust on four successive days, beginning at the bottom of the ocean: -1,574 1/4 feet, -1,289 1/2 feet, -1,719 3/4 feet, -1,400 1/2 feet
What was the mean daily change in elevation of the bottom of the well?

h is the x-coordinate of the vertex

step-by-step explanation:

we have

in this function

the point represent the vertex of the function

so

h is the x-coordinate of the vertex

k is the y-coordinate of the vertex

the distance between the school and her home is 3.6km.

12 mins = 0.2 hours = 1/5 hour

54 ÷ 3 = 18km per hour

1/5 of 18 = 3.6km per 12 mins