If 5x × 23 = 36. Then 5(x+1) = ?
2025
If 5x × 23 = 36. Then 5(x+1) = ?
- A.
22.5
- B.
24
- C.
45
- D.
87
Attempted by 17 students.
Show answer & explanation
Correct answer: A
Explanation:
Interpret the original equation as 5^x × 2^3 = 36.
Since 2^3 = 8, we have 5^x × 8 = 36, so 5^x = 36 / 8 = 9/2.
Then 5^(x+1) = 5 × 5^x = 5 × (9/2) = 45/2 = 22.5.