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

12 + 4
12 + 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 ÷ 4

4 × 12
4 × 12

12 + 12 + 12 + 12

Answer 1

To find out how many inches are in 4 feet, we can multiply the number of feet by the number of inches in one foot. Since there are 12 inches in a foot, we can express this as:

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

Now, let's evaluate the given expressions:

1. **12 + 4**: This expression does not represent the conversion of feet to inches. It simply adds 12 and 4 together. (Not applicable)

2. **4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4**: This expression is equivalent to adding 4 twelve times, which is 4 multiplied by 12 (4 × 12 = 48). (Applicable)

3. **12 ÷ 4**: This expression calculates how many inches are in 1 foot if dividing 12 inches by 4, which results in 3. It does not represent how many inches are in 4 feet. (Not applicable)

4. **4 × 12**: This expression directly calculates the total number of inches in 4 feet, which equals 48 inches. (Applicable)

5. **12 + 12 + 12 + 12**: This expression adds 12 four times, which also equals 48 inches (12 × 4 = 48). (Applicable)

So, the expressions that describe how many inches are in 4 feet are:

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

These three options apply.