Monica is 400 miles away from home while her sister, mary is 300 miles away. say monica travels at a speed of 50 miles per hour and mary travels back at a speed of 40 miles per hour. solve the system of equation and graph it. when are the two sisters the same distance frome home

7.75 hours

Step-by-step explanation:

Distance = Rate times Time

Monica 400=50xT

Mary 300=40xT

Monica 400/50=T, so T=8 hours.  This is how long it takes her to get home.

Mary 300/40=T, so T=7.5 hours.  This is how long it takes her to get home.

The difference in time between 7.5 and 8 hours is 7.75 hours.  This is the time they will be an equal distance from home.

the answer is 62.8 cubic units

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.