Answer:
12x^5
Step-by-step explanation:
 (-2x)(-6x^4)
Multiply the numbers
-2 * -6 = 12
Multiply the variables
x* x^4 = x^5
12x^5
 
        
             
        
        
        
<u>(83.9 × 10^12)(2.87 × 10^-³)</u> 
             3.76 × 10²
<u>(83,900,000,000,000)(0.00287)</u>
                   376
 <u>240,793,000,000</u>                                  
           376
640,406,914.9
        
             
        
        
        
It is given in the question that
Anna buys 12 pens and 20 pencils for a total cost of $16. One pen costs $0.40 more than a pencil. 
Let the cost of pencil is $ x .
Therefore cost of pen is 

According to the question

Distributing 12 and combining like terms, we will get

Therefore cost of pencil is $0.35 and cost of pen is
