Derek's score on a test was 90 percent. he had 72 questions right. how many problems were on the test?

90% = 72 questions

\\Find 1%

1 % = 72 ÷ 90 = 0.8

\\Find 100%

100% = 0.8 x 100 = 80 questions

There were 80 questions

(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.

0.50 , 0.75

step-by-step explanation: