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4 July, 07:45

The temperature T in degrees Fahrenheit is (approximately) a linear function of the number C of cricket chirps per minute. Twenty cricket chirps per minute corresponds to a temperature of 42 degrees Fahrenheit. Each additional chirp per minute corresponds to an increase of 0.25 degree. (a) Use a formula to express T as linear function of C. T = (b) What temperature is indicated by 100 cricket chirps per minute?

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  1. 4 July, 11:23
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    a) T = 0.25 C+37

    b) T = 62°F

    Step-by-step explanation:

    Here T is a linear function of C

    T = mC+b

    For each additional chirp C corresponding to an increase in T of 0.25

    therefore, m = 0.25

    T = 42° F C=20 (given)

    therefore,

    a) 42 = 0.25*20+b

    b = 37

    therefore T = 0.25 C+37

    b) now C = 100

    therefore, T = 0.25*100+37 = 62°F
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