I believe it’s -12w+16x+20
Question is Incomplete; Complete question is given below.
Which expression is equivalent to (3x-5y)+(x+2y)?
1. 4x-7y
2. 4x-3y
3. 4x+3y
4. 4x+7y
Answer:
2. 
Step-by-step explanation:
Given:

We need to simplify the given expression;
Solution on simplifying the given expression we get;
First we will apply distributive property to remove the parenthesis we get;

Now Combining the like terms together we get;

Now adding and subtracting like terms we get;

Hence the equivalent expression for given expression is
.
We can simply divide 5.5 by 10 to find the unit price.
5.5/10 = 0.55
<h3>Each gallon costs $0.55. </h3>
I'm not sure but I think it's 15
Answer:
8.80 if it's the 40°/.
2.20 if it's the 10°/. processing fee
13.20 for how much he paid