Solve whats in the parentheses first
5k+25+4<21+6k
5k+29<21+6k
plug in a number in k for both sides
5(1)+29<21+6(1)
5+29<21+6
34<27
5(2)+29<21+6(2)
10+29<21+12
39<33
so 5(k+5)+4 is greater than 21+6k
Not 100% sure this is correct but this seems correct.
Answer:
30
Step-by-step explanation:
20+11=31
It can't be exactly 31 but it can be any number less than 31, so the nearest whole number down is 30