Question

There are 12 inches in a foot. Which expressions describe how many inches are in 4 feet? Check the THREE that apply.(3 points)
Responses

4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4
4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4

4 × 12
4 × 12

12 ÷ 4
12 ÷ 4

12 + 4
12 + 4

12 + 12 + 12 + 12

Answer 1

To determine how many inches are in 4 feet, we can use the fact that there are 12 inches in a foot. Thus, the total number of inches in 4 feet would be calculated as:

\[
4 \text{ feet} \times 12 \text{ inches/foot} = 48 \text{ inches}
\]

Now, let's analyze the given expressions:

1. **4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4**: This is equivalent to \(4 \times 12\), which equals 48.

2. **4 × 12**: This directly calculates to 48.

3. **12 ÷ 4**: This equals 3, which does not relate to our calculation of total inches.

4. **12 + 4**: This equals 16, which also does not relate to our calculation of total inches.

5. **12 + 12 + 12 + 12**: This equals \(4 \times 12\), which also equals 48.

The three expressions that correctly describe how many inches are in 4 feet are:

- **4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4** (this counts out 12 four times, equivalent to 4 × 12).
- **4 × 12**.
- **12 + 12 + 12 + 12** (this is also \(4 \times 12\)).

Thus, the correct answers are:

- 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4
- 4 × 12
- 12 + 12 + 12 + 12