Answer:
15 minutes
Step-by-step explanation:
You must find the unit rate.
You can find this by dividing 16 miles by 20 minutes
This formula would find how many per minute
The answer would be .64 miles per minutes.
Then Multiply .64 by 12 which would give you the answer of 7.68
I think it’s 975 but I don’t know if I’m right
Answer:
second graph
Step-by-step explanation:
b must be equal to -6 for infinitely many solutions for system of equations
and 
<u>Solution:
</u>
Need to calculate value of b so that given system of equations have an infinite number of solutions

Let us bring the equations in same form for sake of simplicity in comparison

Now we have two equations

Let us first see what is requirement for system of equations have an infinite number of solutions
If
and
are two equation
then the given system of equation has no infinitely many solutions.
In our case,

As for infinitely many solutions 

Hence b must be equal to -6 for infinitely many solutions for system of equations
and