City Carpet and Flooring advertises that they can install 1,200 square feet in 2/30 hours. select whether each installation rate has the same unit rate, in square feet per hour, as City Carpet and Flooring 7.RP.1, 7.NS.3 Yes No
960 square feet of carpet in 2 hours
1000 square feet of carpet in 1/ 3/4th hours
320 square feet of carpet in 2/3 hour

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.

d will be the best answer