A box contains 80 tissues. A case contains 24 boxes of issues and cost $22.56. what is the approximate unit price per tissue in a case?

Price per tissue = $0.01175

Step-by-step explanation:

Given:

Number of tissues in a box = 80

Number of boxes = 24

Total cost = $22.56

Find:

Price per tissue

Computation

Price per tissue = [22.56]/[(80)(24)]

Price per tissue = [22.56]/[1920]

Price per tissue = $0.01175

answer: -1

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.