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yarga [219]
4 years ago
11

Jennifer bought a brand new treadmill on a credit plan at BeFit Exercise Equipment. BeFit will charge her 15% per year compounde

d monthly. If her monthly payments will be $150 for 4 years, how much was the original price of the treadmill?
a) $5,390.72
b) $5,389.72
c) $5,388.72
d) $5,392.72
e) $5,385.72
Mathematics
1 answer:
vovikov84 [41]4 years ago
8 0

Answer: $ 5,389.72

Step-by-step explanation:

This is an annuity question.

Using the formula:

P = E [ \frac{1 - (1+i)^{-n} }{i} ]

E = $150

i = 0.15/12 , since it is compounded monthly

ans P is the original price

substituting into the formula , we have

P = 150 [ \frac{1 - (1+\frac{0.15}{12}) ^{-48} }{\frac{0.15}{12} } ]

P =  150 [ \frac{1 - 0.550856488}{0.0125} ]

P = 150 [ \frac{0.449143511}{0.0125} ]

P = 150 [ 35.93148088]

P = $ 5,389.72

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The equation that describes the which gives the area of the pen, A, as a function of x, the length of fence parallel to the barn is A = 130x - x²

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