College Math Placement Practice Test

What will be the expression for Wednesday's sales in terms of d if $150 less than double Tuesday's sales is calculated?

1. 1.5d - 100

2. 2d + 150

3. 2d − 150

4. 0.5d + 150

The correct answer is: 2d − 150

To derive the expression for Wednesday's sales based on the given information, we start with the fact that "double Tuesday's sales" means we are taking two times Tuesday's sales. If we denote Tuesday's sales as \( d \), then double Tuesday's sales can be expressed as \( 2d \). Next, the phrase "150 less than double Tuesday's sales" indicates that we need to subtract 150 from \( 2d \). Therefore, we can mathematically represent this as \( 2d - 150 \). This expression, \( 2d - 150 \), directly corresponds to the sales on Wednesday, as it captures the necessary operations dictated by the problem statement. Hence, the correct representation of Wednesday's sales in terms of \( d \) is \( 2d - 150 \). This leads us to the conclusion that the answer is \( 2d - 150 \), which reflects the calculation accurately based on the information provided.