Question

Lourenço analyzed prices of laptop computers based on the speed of the processor. Hecalculated the trend line to be y = 101x + 207.85, where x is the speed of the processor ingigahertz and y is the price. Which amount below is closest to the price of a laptop with aprocessor speed of 2.5 gigahertz?A $309C $460B $455D $620

Answer 1

As per given by the question,

There are given that the trend line.

The trend line is,

`y=101x+207.85`

Now,

Where x is the speed of the processor.

So, speed of the processor is given that,

`x=2.5`

Then,

For the amount of price,

Put the value of x in given equation,

So,

`\begin{gathered} Y=101x+207.85 \\ Y=101*2.5+207.85 \\ Y=252.5+207.85 \\ Y=460.35 \end{gathered}`

The price is $460.

Hence, the correct option is C.