(1/2)x + 4 is the expression
<u>We have to look for the pattern in the numbers</u>, so we can figure out what the next term in the sequence is !
It looks like,<u> each number is multiplied by 2!</u>
7 × 2 = <em>14 </em>
14 × 2 = <em>28 </em>
So, what's next?
28 × 2 = ?
The next term in the geometric sequence is ... 56!
I hope I helped :)
Comment if you have any confusion !
<u><em>Answer:</em></u>
5%
<u><em>Explanation:</em></u>
% she earned in interest can be calculated by calculating the % of increase in the balance
<u>We have:</u>
Original balance = $12,450
Amount of interest = $622.5
<u>This means that:</u>
new balance = 12,450 + 622.5 = $13,072.5
<u>Now, we can get the percentage of increase:</u>
% of increase = 
<u>Substitute with the values we have to get the percentage of interest earned as follows:</u>
% of interest earned =
= 5%
Hope this helps :)