According to the study unit, the commutative property means a. the way the numbers are grouped does affect the sum. b. the way the numbers are grouped doesn't affect the sum. c. the order in which you add the numbers does affect the sum. d. the order in which you add the numbers doesn't affect the sum.

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0