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1. Cell phones begin to lose (resale) value immediately after purchase. After one year, an iPhone can be resold at 63% of its list price.

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1. Cell phones begin to lose (resale) value immediately after purchase. After one year, an iPhone can be resold at 63% of its list price. Assume that each year after that, the resale value continues to drop to 63% of the resale price from the previous year. (a) Assuming the list price of an iPhone is S649, write an exponential model for the resale price, P(t), of an iPhone t months after purchase. (b) According to your model, what is the resale value of the iPhone after 18 months? (c) According to your model, when is the resale value of the iPhone S150? (d) Assume that a particular Android phone has a value, A(t), that is always $100 less than the iPhone. Write A(t) as a composition of P(t) and another function, h(t), so that A(t) h(P(t)). e) Another smartphone has a value, V(t), that is always one half of the value of the iPhone. Write V (t) as a transformation of P(t)

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