Total number of pairs = 24 pairs.
Total cost of 24 pairs = $800 approximately.
Cost of each pair = 
Plugging values in the above formula, we get
Cost of each pair = 
If we divide 800 by 24, we get 33.33 approximately.
But in the given problem, estimated cost is given $28 per pair.
If we subtract 33.33-28, we get $5.33.
So, the estimated cost is $5.33 each pair less than the actual cost of each pair.
Therefore, $28 per pair is not a good estimate of the price.
An boy got no head
Step-by-step explanation:
Answer:

Step-by-step explanation:
we have

Distribute in both sides


Combine like terms in both sides

group terms that contain the same variable
Adds 9x both sides


Subtract 26 both sides


Divide by 4 both sides


Answer:
They will have a 89.25 difference in their weekly earnings.
Step-by-step explanation:
Dalia:40/10=4
15*12.75=191.25
Malia:40/8=5
8*12.75=102
191.25-102=89.25