Answer:
1395 times.
Step-by-step explanation:
The Williams family open their door 28 + 17 = 45 times a day.
So in October they opened it 31 * 45 = 1395 times.
Answer:
18
Step-by-step explanation:
-2(3x+4)+7x=10
-6x-8+7x=10
x=10+8
x=18
6+7+8
6+8+7
7+6+8
7+8+6
8+7+6
8+6+7
We have that
y< 6x-3
using a graph tool
see the attached figure
the answer in the attached figure