math help plz!
posted by Thara! .
Heinz has been contributing $300 at the end of each month for the past 15 months to a sivings plan that earns 6% compounded monthly. What amount will he have 1 year from now if he continues the plan?
I'm not sure how to get the answer for this question which is:
$8649.11

math help plz! 
Reiny
Just use the standard annuity formula
amount = payment ((1+i)^n  1)/i
= 300( (1 + .06/12)^27  1)/.=(.06/12)
= 300 ( 1.005^12  1)/.005
= 300(28.83037)
= 8649.11
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