Question

Will give medal!

Answer 1

The graph below shows the distance (y) in kilometers of two cars from their destination at different times (x) in minutes. The table shows the values plotted on the graph:

graphs of y is equal to 70 minus x and y is equal to 70 multiplied by 0.98 to the power of x


Time
(in minutes)
x 0 10 20 30 40 50 60 70
Car 1
(in km)
y 70 60 50 40 30 20 10 0
Car 2
(in km)
y 70 57.19511 46.73256 38.18388 31.199 25.4919 20.82871 17.01861


Part A: What does the x-intercept of the function for car 1 represent? (2 points)

Part B: What does the y-intercept of the function for car 2 represent? (2 points)

Part C: What is the domain of the functions for car 1 and car 2? (2 points)

Part D: What is the average rate of change from x = 30 to x = 40 for the function representing the motion for car 2? What does the value of this average rate of change represent? (4 points)

Answer 2

1 only need help with part D

Answer 3

1 got -0.698488, which doesn't sound right to me.

Answer 4

nevermind 1 got it.

Answer 5

sure?

Answer 6

yea 1 think so.