36
since they ran 12 in 1/3 of an hour multiply 12 by 3 to get a full hour. 12*3=36
The set of ordered pairs are both relation and function
It is a function because, for every value of x, there is one unique value of y
It is a 'relation' because there is a relation between two sets of values; set of x-values and set of y-values
A function is one example of a 'relation'.
7 + 5 + 4 = 16, so probability of getting a red is 4 out of 16 which can be simplified as 1 in 4 chances
This is known as quadratic algebra.
To find it, you can use the quadratic formula but that might take a while.
We can factor it out and get
-3(mx² + mx - 1)
We can then set mx² + mx = 1
It would have no solutions
Edit: Above is wrong! I made the mistake of factoring 3 when it cant be factored.
Here is the solution
mx²-3mx=-3
Divide both by -3
mx²+mx=1
And I really messed this up. Its been a long time since quad. Sorry, but I cant seem to get the answer. Try and look up the quadratic formula and see if you can use that