Answer:
about $62.18
Step-by-step explanation:
Just find the amount of the percentage so,
7.5% of 829 = 62.175
So the tax for the phone is 62.175,
Now round it to the nearest tenth since you can't pay 62.175 because you can't pay half a cent.
62.175 = about $62.18
Steps:
1) We have to keep the

's on one side. For simplification can only occur between

<span> with each other.</span>
2) We have to keep the number on other side. Be careful that you do not simplify it with the

.
<span>Simply, </span>
group the like terms<span> and </span>
simplify.
Methods:

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=>
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Answer: 50
Step-by-step explanation:
7² just means 7x7. So the answer to your question would be 7²=49