Posted by help on .
0.4x+4<0.8x7
the < has a line under it im supposed to put a inequality symbol and the rest of the answer

algebra 
Reiny,
0.4x+4<0.8x7
0.4x+4 ≤ 0.8x7 multiply by 10
4x + 40 ≤ 8x  70
4x ≤ 110
x ≥ 55/2 or x ≥ 27.5