The complete question is :
Question: What is the coefficient in the expression 10x²-7?
The coefficient in the expression
is 10
<h3>What is Coefficient?</h3>
A numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
According to the question,
The expression given is 
The variable given is x
We need to find the coefficient in the expression.
In the given expression x is the variable and the number before the x is coefficient which is 10 .
Hence the coefficient in the expression is 10.
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Answer:
20
Step-by-step explanation:
We can set up a percentage proportion to find the value of x.

Now we cross multiply:

Hope this helped!
I=prt
i=2000 X .04 X 7
i = 560
So you earned 560 after 7 years, plus your 2000 you started with
You can get C
Total cost = student cost + adult cost
t = 25s + 3(s+3)
t=28s+9
ASA postulate because theres two angles and the side in the middle