The table shows the cost of downloading songs

what does the rate of change mean in this situation?

a. the cost increases $5.00 for each additional song that is downloaded.
b. the cost increases $2.50for each additional song that is downloaded
c. the cost increases $0.25 for each additional song that is downloaded
d. the cost increases $1.25 for each additional song that is downloaded

plz explain if you can

D. The cost increases $1.25 for each additional song that is downloaded

Step-by-step explanation:

Rate of change for every function is given by :-

Here, Independent variable= number of songs

Dependent variable = cost

From the given table , it can be seen that the rate of change of cost per number of songs is 1.25 :-

Since it is positive.

It means that "The cost increases $1.25 for each additional song that is downloaded

"

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,