The cost of mailing a dvd in an envelope by express mail is equal to the cost of mailing a dvd in a box by priority mail. what is the weight of the dvd with its packing material? round your answer to the nearest hundredth.
packing material priority mail express mail
box= $2.25 $2.50 per lb $8.50 per lb
envelope= $1.10 2.50 per lb $8.50 per lb

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