A plane flying from City A to City B travels x miles per hour for a total of 4.5 hours. The plane takes the same route on the return trip, traveling 25 miles per hour faster for a total of 4 hours. What is the total distance that the plane travels?

1800 miles

Step-by-step explanation:

Distance = rate X time.   D=R x T

d=x(4.5)

d=4.5x.      (First trip)

D=(x+25)(4)

D= 4x + 100.  (Return trip)

Total distance

4.5x = 4x +100

X = 200

4.5(200) = 4(200) + 100

1800

which of the following can speed up the rate at which the liver breaks  

down alcohol?

question 1 options:

carbohydrates  

coffee  

nothing  

high-protein meals  

step-by-step explanation:

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6