Answer:
the number of dreams that include people you know out of 28 is 21
Step-by-step explanation:
Here is the complete question:
It is believed that about [tex]\frac{3}{4}[/tex] of our dreams involve people that we know.
So the expression to describe the number of dreams that feature people you know if you have "d" dreams is:
[tex]\frac{3}{4} d[/tex]
Now using the above expression we can predict number of dreams that include people you know out of 28. Here 28 represents number of dreams i.e. "d". So expression becomes:
[tex]\frac{3}{4} (28)[/tex]
Now simplify the above expression:
[tex]\frac{3}{4} (28)[/tex] = [tex]\frac{3*28}{4}[/tex] = [tex]\frac{84}{4}[/tex] = [tex]21[/tex]
Hence the number of dreams that include people you know out of 28 is 21
