Question

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Answer 1

Unit rate:

2 dollars per pound : Equation 2 and Table 2

`(1)/(2)` dollars per pound : Table 1

4 dollars per pound : Equation 1

Explanation:

Unit rate means the money required to buy 1 pound of the given quantity.

Table 1:

d p

2 4

6 12

10 20

Here, from the first row, we observe that,

Using unitary method;

Cost of 4 pounds = $2

∴ Cost of 1 pound =
`(2)/(4)=(1)/(2)` dollars

Therefore, the unit rate is
`(1)/(2)` dollars per pound.

Equation 1:

`(1)/(2)d=2p\\d=2*2p\\d=4p`

Now, unit rate can be calculated by plugging in 1 for 'p'. This gives,

`d=4* 1=\$4`

So, unit rate is 4 dollars per pound.

Equation 2:

`d=2p`

Now, unit rate can be calculated by plugging in 1 for 'p'. This gives,

`d=2* 1=\$2`

So, unit rate is 2 dollars per pound.

Table 2:

d p

2 1

6 3

10 5

Here, from the first row, we observe that,

Cost of 1 pounds = $2

Therefore, the unit rate is 2 dollars per pound.