So if you want it to be 9 less than your number (x) then you would subtract nine.
So it would be:
x - 9.
So if your "number" is 12 then you would substitute x for 12 and it would be 12-9. The answer is 3. So 3 is 9 less than a number (12).
I believe
D dddddddddddddddddddddfdfddxdddd
68 is not a prime number. The prime factorization of 68 would be 2 x 2 x 17.
Total miles:350+150=500
Total hours:4+3=7
Avg speed:500/7=71.429 mph
