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2 years ago

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Thomas is saving money for a new mountain bike. The amount (a) Thomas needs to save is more than $50.45. Which inequality models

the amount Thomas needs to save?
A.$50.45=a
B.$60.45 C.a>$50.45
D.a<$50.45

1 answer:

AfilCa [17]2 years ago

3 0

C.

This is because the amount is more than what he needs to save, considering that he is probably has some money in his bank already.

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Explanation:

on applying binomial theorem, $(a+b)^n=\sum_{r=0}^{n} \frac{n!}{r!(n-r)!} a^{n-r} b^r$

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⇒ $(3c+d^2)^6=729c^6 + 1,458c^5d^2 + 1,215c^4d^4 + 540c^3d^6 + 135c^2d^8 + 18cd^{10} + d^{12}$

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