Answer:
b) f (-1) ese es el resultado
Option D. 2(n + 9) is the right answer
Step-by-step explanation:
The word problems are converted into mathematical problems to solve simply.
for the given problem
"two times the sum of a number and 9"
Let n be a number then
when there is and between two things they are performed first then next operation is performed so
the sum of a number and 9

Then
two times the sum of a number and 9

Hence,
Option D. 2(n + 9) is the right answer
Keywords: Mathematical notation
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Answer:
1. 8^2
2. 3^4
3. 5^3
Step-by-step explanation:
1)8×8 = 64
2)3×3×3×3=81
3)5×5×5=125