If a1=7and an=-2an1 then find the value of a5
1 answer:
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Answer: 12 small candles and 16 large candles.
Step-by-step explanation:
Notice that an small candle costs $4 and a large candle costs $6.
Let be "s" the number of small candles you sold and "l" the number of large candles you sold.
Set up a System of equations:
Use the Elimination Method to solve it:
- Multiply the second equation by -4.
- Add the equations.
- Solve for "l".
Then:
- Substitute the value of "l" into the second equation and solve for "s":