Answer:
every function is a relation, but every relation is not function.
Answer: B
Answer:
The radius is 25mm.
Step-by-step explanation:
The radius is always half of the diameter.
You mean what's the answer as a fraction or the equation as a fraction?
4/1 would be the answer as a fraction. 2/1 + 2/1 would be the equation as a fraction.

So, your answer to this problem is
x > 6 and
x < -2.
For there to be 1 car, we consider two possible outcomes:
The first door opened has a car or the second door opened has a car.
P(1 car) = 2/6 x 4/5 + 4/6 x 2/5
P(1 car) = 8/15
For there to be no car in either door
P(no car) = 4/6 x 3/5
P(no car) = 2/5
Probability of at least one car is the sum of the probability of one car and probability of two cars:
P(2 cars) = 2/6 x 1/5
= 1/15
P(1 car) + P(2 cars) = 8/15 + 1/15
= 3/5