Write the phrase as a mathematical expression. Use x as the variable.
-The sum of a number and 15
B)x - 15
C)15x
D)x + 15

Question

Write the phrase as a mathematical expression. Use x as the variable.
-The sum of a number and 15
B)x - 15 
C)15x 
D)x + 15

Quizplus · Accepted Answer

The phrase "the sum of a number and 15" can be translated to "x + 15". Therefore, the best choice is D. The phrase "the sum of a number and 15" means to add 15 to a number, which can be represented as x + 15. Therefore, the correct mathematical expression is D, which is x + 15.

Write the Phrase as a Mathematical Expression