Concept:Each result is the sum of the product and the sum of the two numbers.Explanation:For the first equation, 5+3 gives (5×3)+(5+3)=15+8=23.For the second, 6+4 gives (6×4)+(6+4)=24+10=34.Apply the same logic to 7+5: (7×5)+(7+5)=35+12=47.Answer:7+5=47. Hence, the correct option is C (47).