Question

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)

Answer 1

answer is D

a is 3 times x plus 4
b is 3 times the sum of 3 times x plus 4
c is 3 times x MINUS 4 (so that one is obviously wrong)

hope this helps :D

Answer 2

3(x+4)

D is correct

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)