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Q: Which math expression represents the phrase 9 times the sum of a number and 7?

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" 3x + 5 " does.

It can be: 7x-11

twenty four times a number and add 19

An exponent.

9X + 7

10n

Let the number be x and so the expression is 4x -3

3n + 4

5n - 7

It could be: -3/8+4x-9z as an algebraic expression

10 + 3x

Four times the number x.

5n + 16 ======

n*5 - 6

The expression is: 3m-5

None of the "following" expressions!

6x + 8 = 3x - 5

It could be: 6*(4+659)

If the variable x represents the number: 5x + 3ParenthesesExponentsMultiplyDivideAddSubtractAlways remember this

Let N represent the 'number'. It looks like the first phrase would be expressed as 2(N + 5) which expands to 2N + 10, while the second expression would be 2N + 5, which is not the same.Notice that the first one is 2 times the sum, while the second is 2 times a number.

X = 4(6-y)

7X-6

I would say the anwser would be 11

10n

6w