{"id":168107,"date":"2024-11-16T18:34:41","date_gmt":"2024-11-16T18:34:41","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=168107"},"modified":"2024-11-16T18:34:43","modified_gmt":"2024-11-16T18:34:43","slug":"write-and-evaluate-the-expression","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2024\/11\/16\/write-and-evaluate-the-expression\/","title":{"rendered":"Write and evaluate the expression."},"content":{"rendered":"\n

Write and evaluate the expression. Then, select the correct answer.
ten times the sum of seven and a number, evaluate when j = 1
Replace With 10 Key Words
ten times the sum of seven a number X+7J)
A. 10 x 7+j; when j = 1, the value is 71
B . 7(10+j); when j = 1, the value is 77
C. 10(7-j); when j = 1, the value is 60
D. 10(7+j); when j = 1, the value is 80<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

The given expression is described as “ten times the sum of seven and a number.” This means that we are multiplying the sum of 7 and a number by 10. To express this algebraically, let\u2019s define the unknown number as ( j ), and the expression would be:<\/p>\n\n\n\n

[
10 \\times (7 + j)
]<\/p>\n\n\n\n

This represents “ten times the sum of seven and the number ( j ).”<\/p>\n\n\n\n

Now, let\u2019s evaluate the expression when ( j = 1 ).<\/p>\n\n\n\n

Substitute ( j = 1 ) into the expression:<\/p>\n\n\n\n

[
10 \\times (7 + 1) = 10 \\times 8 = 80
]<\/p>\n\n\n\n

So, when ( j = 1 ), the value of the expression is 80.<\/p>\n\n\n\n

Evaluation of the Given Choices:<\/h3>\n\n\n\n