In a survey, 27% of the people chose salads over a meat dish. in all, 81 people chose salads. how many people were the survey?

Step-by-step explanation:

Let

x-----> the total number of people in a survey

we know that

so

Solve for x

Divide by 0.27 both sides

(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.

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99