Answer:
+8
Step-by-step explanation:
There are many expression that equals to 40
+13
Considering first
=3×3×3=27
=2×2×2×2×2=32
+8=32+8= 40
Hence , are infinite number of expression.
Hence the answer is +8
30,000
7 is rounded up, so 2 + 1 is 3, therefore the answer is 30,000
23 and 14