A cable television company charged $20.50 per month last year for premium channels. This year, they are having a special and are charging $16.40 per month for premium channels. What is the percent of decrease?

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.

believe it or not anna is correct good job anna give me a fist bump there u go gal

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x