Atrain leaves the station traveling west at a constant rate of 45 mph. an express train leaves the same station 1 hour later heading west on the same route, traveling at a constant rate of 60 mph. how many hours will the first train have been traveling when the express train catches up to it?

a. 3
b. 4
c. 5
d. 6

B-4

Step-by-step explanation:

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|