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Citrus2011 [14]
3 years ago
8

Statistical models predict that the price (in dollars) of a 500 GB hard drive will change according to the function p(t) = 600 −

2t2, where t is the month. Which expression gives the number of months t (passed since January 1) in terms of the price p?
Mathematics
2 answers:
slega [8]3 years ago
7 0

Answer:

t(p)=\sqrt{\frac{1}{2}(600-p)}

Step-by-step explanation:

Here, the expression that gives p in term of t is,

p(t)=600-2t^2 -----(1)

Where, p represents the price and t represents the number of months t (passed since January 1).

From equation (1),

p=600-2t^2

2t^2=600-p

t^2=\frac{1}{2}(600-p)

t=\pm \sqrt{\frac{1}{2}(600-p)}

But, number of months can not be negative,

\implies t=\sqrt{\frac{1}{2}(600-p)}

Since, in this expression t is in the term of p,

Hence, the required expression that gives the number of months t in terms of the price p is,

t(p)=\sqrt{\frac{1}{2}(600-p)}

Leni [432]3 years ago
4 0

Let p be a fixed value of price. The expression for t given a value of p is as follows:

p=600-2t^2\\2t^2 = 600-p\\t^2 = \frac{600-p}{2}\\|t| = \sqrt{\frac{600-p}{2}}\\t=\sqrt{\frac{600-p}{2}},\,\,\,\,\,\,t\geq 0,\,\,p\leq 600

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