Please Help!! Brainliest Answer! Thank you!

the answer is x=4 so its option D

Step-by-step explanation:

i first set up a equation which looks like:

8x-12=20

then i have added 12 both sides so 20+12= 32 now im

left with: 8x=32

Now we divide so 32/8= 4

which why x=4

(please mark it brainlest if you found it helpful)

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles