How many integers in the interval [100, 999] are not divisible by 14?

     69

Step-by-step explanation:

Numbers between 100 to 999 which are divided by 13

104,117,130988  .

So a=104, d=13 and,an=988  

an=a+(n−1)d  

988=104+(n−1)⋅13  

88413+1=n  

n=69

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