Debra served 48 people in 3 hours. At this rate how many hours will it take to serve 80 people?

5

Step-by-step explanation:

Use ratios.

Solve for x

5 hours

Step-by-step explanation:

Make a proportion

She served 48 people in 3 hours, and served 80 people in x hours

48/3=80/x

Cross multiply

48*x=80*3

48x=240

Divide both sides by 48 to isolate x

x=5

So, it will take 5 hours to serve 80 people

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.