Answer:
1
Step-by-step explanation:
Just replace 0 instead of x and simplify.
Answer:

Step-by-step explanation:

First, use PEMDAS to distribute the -2 to the parenthesis.

Combine like terms on the right side.

Now, you may either subtract the f's or the constants. I'll subtract the constants first, meaning I will add 10 to both sides.

Now subtract the 2f from both sides.

Divide both sides by 10.

Simplify.

57,800 is 23.8% of the total number of registered doctors.
To find out the number of registered doctors, we divide the number of female doctors by 23.8% as a decimal (which is just 0.238):
57,800 ÷ 0.238 = 242,857
-------------------------------------------------------------------------------------------------------------
Answer:
So there are 242,857 registered doctors.
Mr. Reed DATA:
rate = 40 mph ; time = x 4.5 hrs ; distance = 40x miles
-----
Mrs. Reed DATA:
rate = 60 mph ; time = x hrs ; distance = 60x - 210 miles
------
Equation:
40x = 60x -210
-20x = -210
x = 10.5 hrs
x-3.5 = 7 hrs (Mr. Reed's time)