Answer:
Tiffany purchase the better buy.
Step-by-step explanation:
given data 
Tiffany paid  = $38
snowflake obsidian = 9 pounds
Tony paid = $19
same type of stone = 3 pounds 
solution 
Tiffany shopped well in this scenario. Mainly because Tiffany paid less per pound than Tony. This can be calculated by dividing the total amount paid by the amount received by each
so for Tiffany 
= $38 ÷ 9 
= $4.22 per pound
and for Tony  
=$19 ÷ 3 
= $6.33 per pound
so that here Tiffany paid $4.22 per pound and Tony paid $6.33 per pound 
so here whole $2.11 more than Tiffany
so that with this Tiffany purchase the better buy.
 
        
             
        
        
        
One pound is 16 ounces so 28 pounds is 28x16 which is 448. 448 divided by 8 ounces per serving is 56 ounces per bag
        
             
        
        
        
Q = 3s - 9/6
q = 3(s - 3)/6
q = s - 3/2
6q + 9 = 3s
6q + 9/3 = s
3(2q + 3)/3 = s
2q + 3 = s
s = 2q + 3
        
             
        
        
        
Answer:
The purchase price is $180
The total price is: $189
Step-by-step explanation:
Sales tax rate = 5\%
Sales tax on bike = $9
We need to find the purchase price.
Let purchase price = x
We know that Sales tax = 5% of x 
and Total price = Purchase Price + Sales tax
So, we can write:
Sales tax = 5% of x
Putting values and finding x

So, the value of x i.e Purchase price = $180
The purchase price is $180
Now finding the total price of bicycle
Total price = Purchase Price + Sales tax
Total price = 180 + 9
Total price = $189
So, The total price is: $189
 
        
             
        
        
        
<em><u>The expressions that are polynomial are:</u></em>
6 + w

z + 1
<em><u>Solution:</u></em>
A polynomial is an expression with variables and coefficients with the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables
1) 6 + w
Here "w" is a variable, hence it is a polynomial expression

This is a polynomial, since it has variables and coefficients and variable with non negative exponent
3) z + 1
This is also a polynomial with variable "z" and has addition operation

Since it has root so it is not a polynomial