If a backpack costs $25, how much will it cost, in dollars, after a 20% discount?

20 dollars

Step-by-step explanation:

After 20 percent is taken off there is 80 percent left so...

25 * .8 = 20

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

(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.