Question 171591
In a list of numbers,the first is 2,the second is 7,and each subsequent number is the sum of all the preceding numbers.What is the fifth number in the list.
List the numbers: 2,7,9,16,25
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If the 100th number in the list is x,what is the 103rd number in the list?
Good question.
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The sum of two numbers is 19.5  If 5 times the smaller number is 3 less than twice the larger number,what are the numbers?
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Equations:
x + y = 19
5x = 2y-3
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Rearrange:
x + y = 19
5x-2y = -3
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5x + 5y = 95
5x - 2y = -3
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7y = 98
y = 14
Then x = 5
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Cheers,
Stan H.