OG详解-OG4 数学1 Q4

Choice D is correct. The given phrase “8 times a number x” can be represented by the expression 8x. The given phrase “3 more than” indicates an increase of 3 to a quantity. Therefore “3 more than 8 times a number x ” can be represented by the expression 8x + 3. Since it’s given that 3 more than 8 times a number x is equal to 83, it follows that 8x + 3 is equal to 83, or 8x + 3 = 83. Therefore, the equation that represents this situation is 8x + 3 = 83.
Choice A is incorrect. This equation represents 3 times the quantity 8 times a number x is equal to 83. Choice B is incorrect. This equation represents 8 times a number x is equal to 3 more than 83. Choice C is incorrect. This equation represents 8 more than 3 times a number x is equal to 83.