At noon a train leaves washington, d. c., headed for miami, florida, a distance of 1100 miles. the train travels at a speed of 60 mph. at 1 pm a second train leaves miami headed for washington d. c., traveling at 70 mph. at what time will the two trains pass each other?

Let t hours be the number of hours needed for the second train to catch up the first one.

Then the first train is  on the way (t+1) hours.

1. First train travels at a speed of 60 mph (t+1) hours and passes

2. Second train travels at a speed of 70 mph t hours and passes

Since two trains will meet, then

Then they will meet at 7:00 p.m.

7:00 p.m.

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!

r and t.

both are 64 degrees.