The table below represents the distance of an airplane from its destination as a function of time: time (hours) x distance (miles) y 0 2,700 1 2,160 2 1,620 3 1,080 4 540 part a: what is the y-intercept of the function, and what does this tell you about the airplane? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 4 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the airplane continued to travel at this rate until it reached its destination? (2 points)

Part A) the Y intercept is where x = 0.

 Y intercept = 2,700. This means the plan is 2700 miles away from it's destination

Part B) at X1 y = 2160

X4 y = 540

rate of change = y2-y1 over x2-x1 using X4 and X1

rate of change = 540 -2160 / 4-1 = -1620/3 = -540

 for every 1 hour traveled the plane is  getting 540 miles closer to it's destination

Part C) the domain would be all the X numbers

 so at hour 4 it is 540, the rate of change is also 540 so at hour 5 it would be at it's destination so the domain would be (0,1,2,3,4,5)

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

7

step-by-step explanation: