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3 Cards in this Set
- Front
- Back
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Annalisa saved P5.00 on June 1, P13 on June 2, P21 on June 3 and so on until June 30. How much would she have saved by the end of the month? |
(She save in the end of a month is 237) |
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2. A certain culture of bacteria initially contains 1 000 bacteria and doubles every hour. How many bacteria are in the culture at the end of 10 hours? |
Solution: a, 2000 r=2 n=10aarn-1a10(2000)(2)10-1= (2000)(2)⁹= (2000)(512)a10=1, 024,000 |
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Jessica started going to school in 2009 having P5,000 annual allowance and received and increment of P600 each year. In which year did her annual allowance reach P9800? |
Number of YearsAnnual Allowance1 3000TV 9800an = a₁ + d (n-1)15,600Solution 5000-5600 9800 = 5000 + 600 (n-1)4800 600n-600 76002009 +8 = 2017+5400-600n600600 9 = n |
