Answer :

To simplify the expression [tex]\(a^3 \cdot a^{10}\)[/tex], you can use the laws of exponents. Specifically, when multiplying like bases, you add their exponents.

Step-by-Step Solution:

1. Identify the bases and exponents:
- The base in both terms is [tex]\(a\)[/tex].
- The exponents are 3 and 10.

2. Apply the power rule for multiplication of exponents:
- When you multiply two exponents with the same base, you add the exponents:
[tex]\[ a^3 \cdot a^{10} = a^{3+10} \][/tex]

3. Add the exponents:
- The sum of the exponents 3 and 10 is 13:
[tex]\[ 3 + 10 = 13 \][/tex]

4. Rewrite the expression with the new exponent:
- The simplified form of the expression is:
[tex]\[ a^{13} \][/tex]

So, the correct simplified form of [tex]\(a^3 \cdot a^{10}\)[/tex] is [tex]\(a^{13}\)[/tex].

Answer: [tex]\(a^{13}\)[/tex]