Scores on a college entrance exam rose from 20.1 in 1977 to 20.6 in 1986. What percent increase is this? What is the percent of increase?
(Dound to the nearest tenth

2.5% change when rounded to the nearest tenth

Step-by-step explanation:

The Formula for measuring change over time:

P=N−O/O⋅100

P is the percent change

N is the New Value - 20.6 for this problem

O is the Old Value = 20.1 for this problem

First subtract the new value from the old value (you should get 0.5)

Then, divide that number by the old value (you chould get a really long decimal)

Then, multiply that number by 100 (You should get a number like 2.48756 etc.)

Lastly, round it up to the nearest tenth (2.5)

(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.