For all real numbers, if vr is irrational then r isirrational.
if true, give a rigorous proof, and if false give adisproof by
counterexample
prove that for all integers n, if n is not divisible by 2 or3,
then n^2 +23 is divisible by 12.

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.

These are the multiples of 15 but what you are probably asking or what are the factors of 15

Answer:

the image is given below

step-by-step explanation:

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this