C is the answer because 7+8= 15 and 7x8= 55
Answer:
C) x = -1
Step-by-step explanation:
I graphed the equation below on the graph.
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Answer:

Step-by-step explanation:

















The value of the sum of twice a number and 7 is 17.
<h3>What is an expression?</h3>
An expression is used to show the relationship between the variables that are given.
Let the number in this situation be 5. This will be illustrated as:
2n + 7
where n = number = 5
= 2n + 7
= 2(5) + 7
= 10 + 7
= 17
Therefore, the number is 17.
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