SOLUTION: write an equation the solve the equation without graphing. explain how you found your answer 1)a parent raises a childs allowance by 20% each year. if the allowance is $8 now when

Question 392646: write an equation the solve the equation without graphing. explain how you found your answer
1)a parent raises a childs allowance by 20% each year. if the allowance is $8 now when will it reach $20?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
1)a parent raises a childs allowance by 20% each year. if the allowance is $8 now when will it reach $20?
...
Now it is $8
20% of 8 =1.6
every year it increases by $1.6
y = 8+1.6x
..
20=8+1.6x
20-8=1.6x
12=1.6x
/1.6
12/1.6=x
7.5 years it will be $20
...
m.ananth@hotmail.ca
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