Question

Emily and Andy each go to a hardware store to buy wire.The table shows the relationship between the cost and the length of wire.

Answer 1

Answer:

So, Emily will spend,  11.52 unit on wire

and, Andy will spend  18.72 unit on wire.

Step-by-step explanation:

Cost of wire is = $\frac {4.80}{120}$

                       =  $\frac {5.40}{135}$

                       = $\frac {6.00}{150}$

                       = $\frac {7.00}{175}$  

                        = 0.04 unit/inch

We know that,

 12 inch = 1 foot    and

  1 yard = 3 foot    [Note that unit of a quantity always denoted singular].

So, Emily will spend,

  $24 \times 12 \times 0.04$ unit

 = 11.52 unit on wire

and, Andy will spend,

  $13 \times 3 \times 12 \times 0.04$ unit

 = 18.72 unit on wire.