7 of 107 of 10 Items
18:23
Skip to resources
Question
The sum of 38 and twice a number x is 124. What is −2x − 5?
Responses
A −101−101
B −91−91
C 4646
D 8686
To solve this problem, we can set up an equation using the information given.
The sum of 38 and twice a number x is 124 can be written as:
38 + 2x = 124
To solve for x, we can subtract 38 from both sides:
2x = 124 - 38
2x = 86
Finally, we can divide both sides by 2 to solve for x:
x = 86/2
x = 43
Now that we know the value of x, we can substitute it into the expression −2x − 5:
−2(43) − 5 = -86 - 5
= -91
Therefore, the correct answer is B) -91.