Answer:
Step-by-step explanation:

(x + 7)° = (15 + 7)° = 22°
(4x + 8)° = (4*15 + 8)° = (60 + 8)° = 68°
The price of the refrigerator was $9600
Answer:
C. 3⁶
Step-by-step explanation:
Exponents with the same base follow this exponential rule for division:
When the bases are the same, we can subtract the exponents.
The bases are the same in this problem: 3. Therefore, we can subtract the exponents from each other:
The final and correct answer is C. 3⁶.