In this question ,it is given that
The penny size of a nail indicates the length of the nail. The penny size
d is given by the literal equation

where n is the length (in inches) of the nail.
In the first part we have to solve for n .
And for that firt we add 2 to both sides

Now we divide both sides by 4, that is

Part b.
When d=3

When d =6, we will get

When d =10, we will get

In this problem, the average is already given. In order to solve for the missing length of jump rope we have the following solution:
Let x = be the total length
X = 4(112)
X = 448
Therefore,
34m + 1m + 212m = 247m
448m - 247m = 201 length of the fourth jump rope
She would have to pay $3.40 I think. A 12-pack is half the size of a 24-pack so I did half the price.
Answer:
Domain is x-values'
ranges y-values'
domain: x>=1
Range: y<=0
Step-by-step explanation: