Answer:
C. 4.2a + 0.8
Step-by-step explanation:
Given:
The two binomials given for addition are:
and 
Now, adding both the binomials, we get:

Distributing the positive sign inside the second binomial, we get:

Now, combining like terms using the commutative property of addition, we get:

Simplifying the above expression, we get:

Therefore, the resulting addition of the given binomials is 
Hence, option C is the correct answer.
Answer:
Step-by-step explanation:
<u>Step 1: Set y to 15 and solve</u>
<u />

<em>Add 10 to both sides</em>
<em />

<em>Multiply both sides by 5</em>
<em />

Answer: 
Answer:
Interest = $47.34
Step-by-step explanation:
Formula:-
Simple interest I = PNR/100
P - Principle amount
N - number of years
R - Rate of interest
It is given that
P = $ 1600
R = 6%
Number of days = 180 days
<u>To find the simple interest for 1 year(365 days)
</u>
I = PNR/100
= (1600 * 1 * 6)/100 = $96
<u>To find the interest for 180 days
</u>
For 365 day I = $96
For 180 days I = (180/365) * 96
I = $47.34