What would the phrase "three times the sum of a number and 4" look like as a variable expression?

a. 3x+4

b. 3(3x+4)

c. 3x - 4

d. 3(x + 4)

3(x+4)

D is correct

Step-by-step explanation:

Phrase: "three times the sum of a number and 4"

Let number be x

Now break the phrase

Phrase: "sum of a number and 4"

Expression: x+4

Phrase: "three times the x+4"

Expression: 3(x+4)

"three times the sum of a number and 4" = 3(x+4)

where x is variable.

Hence, The expression of given phrase is 3(x+4)

no not all of them.

step-by-step explanation:

some of them have a square base.

it would open into a square depending on the type of envelope i’m not sure about the second part