Answer:
Step-by-step explanation:
First of all you need to use BIDMAS/BODMAS whatever you call it. You can clearly see that division comes before addition so you need to do:
10 divided by 3 is 5 then you add 8 which will give you 13
Kilometers in 1cm=1/1,00,000
=0.00001
Therefore, Kilometers in 3 cm=3×0.00001
=0.00003km
x≤-4 or x≥0.5