<h3>Answer:</h3>
<h3>Explanation:</h3>
You can try the choices to see which one works. The differences between an values double each time. They have the sequence 1, 2, 4, 8. So, you know that choices A) and D) do not work. They show the difference to be constant at 1 or 8. Since the differences are multiplied by 2, C) is a reasonable choice. Trying that, we find it describes the sequence perfectly:
a2 = 2·2 -1 = 3
a3 = 2·3 -1 = 5
a4 = 2·5 -1 = 9
a5 = 2·9 -1 = 17
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Trying choice B on the last term, we have
... a5 = 3·a4 -3 = 3·9 -3 = <em>24 ≠ 17</em>
The solution set is {2, a}
54...............
6*(5+4)
6*9
In this case, we are only interested with the number of
blue gumballs and yellow gumballs. In the given, it is stated that there are 5%
yellow gumballs while the percentage of the blue gumball is yet to be
calculated.
The total percent should be 100%, therefore the % blue
gumballs is:
% blue gumballs = 100% - 20% - 30% - 5% - 10%
% blue gumballs = 35%
Therefore the total number of each gumballs for each color is:
yellow gumballs = 120 * 0.05 = 6
blue gumballs = 120 * 0.35 = 42
Hence, 42 – 6 = 36
<span>Therefore there are 36 more blue gumballs than there are
yellow gumballs.</span>