My guess is B. hope i help
The coefficients in the expression x-3y-7xy+4 is -3 and -7.
The coefficient of x are 1
-3y=3
-7xy=-7
What is coefficients?
A coefficient is a number or quantity that is associated with a variable. Typically, it is an integer multiplied by the variable and written next to it. The variables which do not have a number with them are assumed to be having 1 as their coefficient. For example, 3 is the coefficient of x in the expression 3x, but 1 is the coefficient of x2 in the expression x2 + 3. A coefficient, in other words, is a multiplicative factor in terms of a polynomial, a series, or any expression. Consider the following expression, which shows that 5 is the x2 coefficient and 8 is the y coefficient.
To learn more about coefficients from the given link:
brainly.com/question/27481600
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Okay, so how I solve this answer is by first figuring out how many people didn't know the name.
So, If 80% of 1,000 didn't know the name that means 800 people did not know the name.
(1000 x .8 = 800)
Then you take the total number of people, 1000, minus the people who did not know the name, 800, and you get the total number of people who did know the name which is;
(1000-800=200)
200 people knew the name of the congressman.
I have attached a photo with solution:
I would go with A, but I'm not positive.