Question

The following table gives data relating the intensity of exercise on a scale of 0-1 and the pulse rate of the person. If the intensity were to increase to 0.90(assuming. the rate stays the same), approximately what would be the associated pulse rate?

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Answer 1

Answer:
`The`
`answer`
`is`
`C.`
`200`

Explanation:

`I ~can ~see ~that ~it ~does~ not ~appear ~to ~be`
`LINEAR`

`y = 73e^kx`
`< ---~pulse~rate`

`.7`
`when`
`y = 155`
`< ---~sub ~in ~x`

`155 = 73 e^(.7 * k)`

`ln ( 155/73) = .7k`

`.75296567 = .7k`

`k = 1.07567`

`for`
`x = 0.9 :`
`pulse rate = y = 73 e^(1.07567`
`^. .9) = ~ 192`

`Therefore~your~answer~is:~C.~200`