Arazorblade manufacturer wants to test responses to a new blade for heavy beards. what is the best sample for an experiment?

a random sample from all people of all ages
a random sample of men with beards
a random sample of all people who shave
a random sample of men who shave and have a heavy beard

The right answer would be A random sample of men who shave andn have heavy beard because the person should like to shave because you shouldn't force them to try it. They also need to have a heavy beard because the manufacturer is creating a razor blade for men with heavy beards. Hope this helps.

(a) No solution

(b)

(c)  

Step-by-step explanation:

Given

See attachment for graph

Solving (a): Solution to p(x) and f(x)

Curve p(x) and line f(x) do not intersect.

So, there is no solution to the pair of p(x) and f(x)

Solving (b): Two solutions to f(x)

This means that we select any two point on straight line f(x)

From the line of f(x), we have:

Solving (c): Solution to p(x) = g(x)

Here, we write out the point of intersection of p(x) and g(x)

From the graph, the point of intersection is: