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What is the value of 7.5(3x + 4),when x = 7

User Dlo
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2 Answers

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Final answer:

To determine the value of 7.5(3x + 4) when x = 7, you substitute 7 into the expression, calculate 3(7) + 4 to get 25, and then multiply 7.5 by 25 to obtain the final answer of 187.5.

Step-by-step explanation:

The student asked what the value of 7.5(3x + 4) is, when x = 7. To solve this, we'll follow these steps:

  1. Substitute x with 7 in the expression 3x + 4, which gives us 3(7) + 4.
  2. Perform the multiplication: 3 times 7 equals 21.
  3. Add 4 to 21, resulting in 25.
  4. Now multiply 7.5 by 25 to get the final answer.
  5. 7.5 times 25 equals 187.5.

Hence, the value of 7.5(3x + 4) when x = 7 is 187.5.

User Runonthespot
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6 votes
187.5 would be the answer, you take 7.5(3x7+4) and get 187.5 :)
User MordicusEtCubitus
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