how to graph and solve 11 < 7 + d

Question

I AM TRYING TO FIGURE OUT HOW TO HELP MY SON WITH HIS MATH HOMEWORK

Answer 1

11<7+d

subtract 7 from both sides

11-7<7+d-7

4<d

 

d is all numbers larger than 4.

On a number line put an open circle

at 4 with an arrow pointing to the right.

The open circle denotes the number 4

is not included.  If it had been all 

numbers greater than or equal to 4, 

you would put a closed circle at 4.

 

-|----|----|----|----o→|----|----

 0     1    2     3     4    5    6