Question
Which statements accurately describe the function \( f(x)=3(16)^{\frac{3}{4} x} \) ? Select three options. The initial value is 3 . The domain is \( x>0 \). The range is \( y>0 \). The simplified base is 12 . The simplified base is 8 .
Ask by Patel Ingram. in the United States
Feb 03,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
The correct statements are:
- The initial value is 3.
- The range is \( y > 0 \).
- The simplified base is 8.
Answer: A, C, E
Solution
Let's analyze each statement about the function \( f(x) = 3(16)^{\frac{3}{4} x} \):
1. **The initial value is 3.**
- **True.** The initial value is \( f(0) = 3(16)^{0} = 3 \).
2. **The domain is \( x > 0 \).**
- **False.** For exponential functions like \( f(x) \), the domain is all real numbers (\( \mathbb{R} \)) because \( 16^{\frac{3}{4} x} \) is defined for any real \( x \).
3. **The range is \( y > 0 \).**
- **True.** Since \( 16^{\frac{3}{4} x} \) is always positive and it's multiplied by 3, the range of \( f(x) \) is indeed \( y > 0 \).
4. **The simplified base is 12.**
- **False.** To simplify the base:
\[
16^{\frac{3}{4} x} = (16^{\frac{3}{4}})^x = (2^4)^{\frac{3}{4}})^x = 2^{3x} = 8^x
\]
So, the simplified base is 8, not 12.
5. **The simplified base is 8.**
- **True.** As shown above, the simplified base is indeed 8.
**Therefore, the three correct statements are:**
1. The initial value is 3.
3. The range is \( y > 0 \).
5. The simplified base is 8.
Answer: All except statements 2 and 4 are correct.
Reviewed and approved by the UpStudy tutoring team
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The Deep Dive
The initial value is 3. This means that when \( x = 0 \), the function \( f(x) \) equals \( 3(16)^{0} = 3 \). So, you've hit the nail on the head with that one! The range is \( y > 0 \). Since the base of the exponential function is positive (16), and it is multiplied by a positive constant (3), the output values of the function will always be greater than zero, confirming the range!