Only 1 expression per box​

1) 4 2) 5 3) 6

Step-by-step explanation:

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(n + 7)(-3)

3(n - 7)

7(n - 3)

Step-by-step explanation:

We are given worded expressions and are asked to match the algebraic expression that goes along with it.

Let's look at the first, "Negative three times the sum of a number and seven"

Our keywords here are negative, times, and sum.

These three indicate that there is a negative number, multiplication, and addition.

Start off with a negative three, of course, the value is -3, and it is alone.

Followed with the word times, this means that -3 is valued by itself and is not being added or subtracted by any other number.

Now the sum of a number and seven proves that these two must be grouped together, therefore our answer is (n + 7)(-3)

Now for the second, "Three times the difference of a number and 7"

Our keywords are times and difference

There is a multiplication and subtraction problem within this expression

So first, three times shows that the value 3 is alone.

Followed by the difference of a number and 7, meaning that the number (n) and 7 are in an expression as themselves and should be grouped.

Our answer is 3(n - 7)

Onto the last, "Seven times the sum of a number and negative three"

Our keywords are times, sum, and negative

Just like the first, there is an addition, multiplication, and negative number

Seven times indicates that the value 7 is alone

The sum of a number shows that this is a separate group, followed with negative three, n is being added to negative three

With the combination of another group and the addition problem, our answer is 7(n - 3)

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13