Answer:
2a-6>=15 this is because the key word at least means it can be 15 or higher but it cannot be less than 15.
Step-by-step explanation:
31.
There's a pattern, +1, +2,+3,+4 ect.
Answer: Yes, well done.
Step-by-step explanation:

Answer:
B, C, A, B
Step-by-step explanation:
<h2>Correct question;</h2>
<h2>

</h2><h2>Required solution;</h2>
<h3>↠ Multiply the terms with the same base by adding their exponents</h3>
<h2>

</h2><h3>↠ Add the numbers</h3>
<h2>

</h2>
After expanding the answer will be 81

Hope it helps...
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