If 1 + 1 = 2, 2 + 3 = 13, and 3 + 3 = 18, what is 4 + 3 equal to - mathselab.com

If 1 + 1 = 2, 2 + 3 = 13, and 3 + 3 = 18, what is 4 + 3 equal to?

Question


If 1 + 1 = 2,
2 + 3 = 13,
and 3 + 3 = 18,
what is 4 + 3 equal to?


A. 28
B. 30
C. 25
D. 22


Answer: C. 25


Solution:

It can be derived by the following pattern:

1² + 1² = 2

2² + 3² = (4 + 9) = 13

3² + 3² = (9 + 9) = 18

4² + 3² = (16 + 9) = 25


The Answer is 25.



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