Rezolve in natural numbers

a) 3x + 5< 3 (x+2)
b) 4x+7> 2(2x+5)
c) 7x+41> 2(3x+11)
d) 18+10x< 5(x+2)+2(x+3)

pls i neted fast

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9