Answer:
see attachments
Explanation:
You want to know when two cars will meet if they start 350 miles apart and travel toward each other at 30 mph and 40 mph.
Graph
There are several ways you can draw a diagram of the cars and their relationship. One might show the cars a distance apart labeled 350 miles, with an arrow at each car pointing toward the other with its speed marked: 30 mph or 40 mph.
In the first attachment, we have elected to draw a graph showing how the distance between the cars and their opposite starting location varies with time. That is, one car starts 350 miles away and decreases its distance by 30 mph. The other increases its distance from its starting point by 40 mph. The cars will meet when the remaining distance for the first car is the same as the distance traveled for the second car.
The graph shows that is after 5 hours, when the second car is 200 miles from its starting location.
Table
The table seems to ask for the number of miles traveled in terms of speed and time. That quantity is the product of the speed and time.
Equation
The equation expresses that the sum of the two distances traveled is equal to the starting separation distance: 70t = 350. Dividing by 70 gives the solution: t = 5.