Nicole left home and traveled toward the recycling plant. two hours later kristin left traveling at 50 km/h in an effort to catch up to nicole. after traveling for three hours kristin finally caught up. what was nicole's average speed?

Nicole's average speed is .

Step-by-step explanation:

Given,

Speed of Kristen =

Time taken by Kristen to cover the distance =

Solution,

We can find out the distance traveled by Kristen by multiplying speed with time.

The distance traveled by Kristen is equal to distance traveled by Nicole.

As the question said Kristen left 2 hours later and cover the distance in 3 hours.

That means Nicole take 5 hours to cover the distance.

So, For Nicole;

Distance = 150 km

Time = 5 hrs

Here we use the formula of speed.

Now substituting the values, we get;

Hence Nicole's average speed is .

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!