Please help me i don’t know how to find x
1 answer:
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Domain: Set of all real numbers
If you want to express the domain in set-builder notation, then you'd write something like
which is fancy notation to basically say "x is any real number"
If you want to write the domain in interval notation, then you'd write
which is the interval from negative infinity to positive infinity. In other words, the entire real number line.
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The domain is the set of all real numbers because we don't have any restrictions to worry about. There are no division by zero errors. There are no cases where we have to worry about taking the square root of a negative number, or anything similar. Any number can replace x to generate an output for y.
If you want to express the domain in set-builder notation, then you'd write something like
If you want to write the domain in interval notation, then you'd write
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The domain is the set of all real numbers because we don't have any restrictions to worry about. There are no division by zero errors. There are no cases where we have to worry about taking the square root of a negative number, or anything similar. Any number can replace x to generate an output for y.
Option C
3x + 7 > 4x is the inequality for sum of three times a number and seven is greater than four times the number
<em><u>Solution:</u></em>
Given that the statement is:
The sum of three times a number and seven is greater than four times the number
We have to find the inequality that represents the above statement
Let the number be "x"
Therefore,
sum of three times "x" and seven is greater than four times "x"
Here "times" represents product or multiplication
Thus we get,
three times "x" + 7 > 4 times "x"
Thus the inequality is found. Option C is correct