<u>Part A
</u><u />To estimate this, we should first look at our fractions and see if they can be combined to form a whole number. In this case, 

 and 

 equal approximately 1. We can add this "1" to the other to full gallons to estimate that the painter needs about 
3 gallons.
<u>Part B
</u><u /><u />To find the exact amount, we should first change the mixed numbers to improper fractions. We do this by multiplying the denominator by the whole number, adding the numerator, and placing that value over the denominator.

Now, we need to find the least common denominator. This is the lowest value that both denominators will divide evenly into. In this case, that number is 15.
Next, we should multiply both fractions so that the denominator is that number. Remember that we must also multiply the numerator for the fraction to remain equivalent to its original value.

Now, we can simply add our numerators.

We know that he needs 

 gallons of paint, but this is not in the most simplified format. To simplify, we need to turn our improper fraction back to a mixed number. To do this, we need to divide our numerator by the denominator to create our whole number, and the remainder becomes our new numerator.

Using that logic, we can see that the painter needs exactly 
 gallons of paint
 gallons of paint.
    
 
        
             
        
        
        
Answer:
8 & 17?
Step-by-step explanation:
8*2= 16
so that makes 17 one more then 8*2 and the sum of 17 and 8 =25
 
        
             
        
        
        
Answer:
4 gallons of paint 
Step-by-step explanation:
We solve using the formula for surface area of rectangular prism.
A=2(wl+hl+hw)
Where:
w = Width
h = Height
l = Length
The pool is 4 feet deep, 18 feet long, and 12 feet wide. 
Hence,
=2 × (12 × 18 + 4 × 18 + 4 ×12) 
=672 square feet
One gallon of paint covers 155 square feet.
Hence,
155 square feet = 1 gallon of paint
672 square feet = x
Cross Multiply
155 square feet × x = 672 square feet × 1 gallon of paint
x = 672 square feet × 1 gallon of paint/ 155 square feet
x = 4.335483871 gallons of paint
Therefore, based on the calculation above, approximately to the nearest whole number, Sierra uses 4 gallons of paint 
 
        
             
        
        
        
13/20,3/5,29/50,14/25,53/100
        
             
        
        
        
Answer:
216 in²
Step-by-step explanation:
a = bh
a = 18 * 12
a = 216