Please help me with this!

x = 3

ST = 24

Step-by-step explanation:

if T is the midpoint then ST = TU

8x = 2x + 18  move like terms to the same side

8x - 2x = 18 subtract like terms

6x = 18 divide both sides by 6

x = 3 to find ST replace x with 3

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