Question:** If \( 2^{x+1} = 16 \), what is the value of \( x \)?
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- Solutions are \( x = 3 \) and \( x = 1 \).
- Question:** A triangle has sides of length 7 cm, 24 cm, and 25 cm. Is it a right triangle?
- \( 25^2 = 625 \), so it satisfies the theorem.
- So, \( 2^{x+1} = 2^4 \) implies \( x+1 = 4 \).
- Solving gives \( x = 3 \).
- Question:** The sum of the first \( n \) natural numbers is 210. Find \( n \).
