1. The problem asks to evaluate four expressions and find the corresponding letter for each answer. 2. Evaluate expression 1: $8 + 4^2 \div 2$ - Use order of operations: exponents first, then division, then addition. - Calculate $4^2 = 16$ - Then divide: $16 \div 2 = 8$ - Finally add: $8 + 8 = 16$ - The answer is 16, which corresponds to letter C. 3. Evaluate expression 2: $3 \cdot 8 - 10 + 1$ - Multiply first: $3 \cdot 8 = 24$ - Then subtract and add from left to right: $24 - 10 + 1$ - Calculate $24 - 10 = 14$ - Then $14 + 1 = 15$ - The answer is 15, which corresponds to letter D. 4. Evaluate expression 3: $15 - 9 \div (8 - 5)$ - Calculate inside parentheses: $8 - 5 = 3$ - Then divide: $9 \div 3 = 3$ - Finally subtract: $15 - 3 = 12$ - The answer is 12, which corresponds to letter A. 5. Evaluate expression 4: $5^2 - 10 \div 5$ - Calculate exponent: $5^2 = 25$ - Divide: $10 \div 5 = 2$ - Subtract: $25 - 2 = 23$ - The answer is 23, which corresponds to letter H. 6. Putting the letters in order for the four expressions: C (16), D (15), A (12), H (23). Final answer code: CD AH Removing space as instructed: CDAH