Can someone please help me with this financial math question?

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ykylm

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A woman deposits $100 into her son's savings account on his first birthday. On his second birthday she deposits $125, $150 on his third birthday and so on.

a) How much money would she deposit into her son's account on his 17th birthday?

b) How much in total would she have deposited after her son's 17th birthday?
 
3rd birthday is 25(3-1) which is 50+100=150, so 17th birthday would be 25(17-1)=400dollars+100=500 on the 17th birthday. to get the total you will need to use summation which is i=1 to 17, 100 is a constant so you will multiply it by 17 to get 1700 then 25i, 25n(n-1)/2 , 25(16)(16-1)/2=3000 in total will be 3000+1700 which is 4700 dollars total.
 
well she adds 100+25x
so each year the amout of $$$ she adds increeses by $25 each year.

so to solve
a) times 25 and 17
b) plug 17 in for x
(17 x 25)+100

Hope this helps
I geuss your staring algebra, or will be soon bassed on this problem
 
y=25x+100
since 25 is your slope*the rate of growth* you put that in for the slope
so put in 17 for the equation, and thats how much money you put in.
PENIS
 
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