The following data were collected in a survey of 10th graders and summarize their cell phone status. no cell phone conventional cell phone user smart phone user boys 55 65 35 girls 31 78 26

a) what proportion of the 10th graders have cell phones?
b) what proportion of the boys do not have cell phones?
c) what proportion of smart phone users are boys?

Consider the following calculation

Step-by-step explanation:

The following data were collected in a survey of 10th graders and summarize their cell phone status.

No Cell Phone Conventional cell phone user Smart phone user

Boys 55 65 35

Girls 31 78 26

A)

Proportion of the 10th graders have cell phones=(65+78+35+26)/Total=204/290=0.703

B)

Proportion of the boys do not have cell phones=55/(no.of boys)=55/(55+65+35)=55/155=0.35

C)

Proportion of smart phone users are boys=(65+35)/(65+35+78+26)=100/204=0.490

(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.