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denpristay
19 days ago
8

Kathy and Mark Smith believe investing in their retirement is critical. Kathy began investing 20% of each paycheck in a retireme

nt account when she was 20 years old. She has saved four times more than Mark who began saving when he was 35. If their total retirement savings equals $1,530,000, how much are Kathy’s and Mark's investments worth?

Mathematics
1 answer:
Zina [9.1K]19 days ago
5 0

Answer:

Kathy: $1,224,000

Mark: $306,000

Please refer to the attachment.

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Alright, we can express the baseball's motion with an equation like:

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h(x) = a*x^2 + v0*x + h0

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<pthus our="" equation="" is:="">

h(x) = a*x^2 + v0*x + h0.

<pexamining the="" table:="">

When x = 0s, h(0s) = 6ft

<pthus:>

h(0s) = a*0s^2 + v0*0s + h0 = 6ft

            h0 = 6ft.

It’s also noted that:

h(2s) = h(4s)

<pthe symmetry="" of="" the="" quadratic="" function="" implies="" that="" axis="" lies="" between="" and="" located="" at="" x="3s.&lt;/p"><pin a="" standard="" quadratic="" function:="">

a*x^2 + b*x + c

The symmetry line is given by:

x = -b/2a

<pin this="" instance:="">

b = v0

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v0 = -3s*(2a)

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h(2s) = 22ft = a*(2s)^2 - 6s*a*2s + 6ft

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h(x) = (-2ft/s^2)*x^2 + (12ft/s)*x + 6ft

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</pthus></p></pso:></pnext></phaving></ptherefore></pin></pin></pthe></pthus:></pexamining></pthus>
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