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10 August, 20:28

According to a study, the relation between the average annual earnings of males and females with various levels of educational attainment can be modeled by the function F = 0.78M - 1.315

where M and F represent the average annual earnings (in thousands of dollars) of males and females, respectively. (a) Viewing F as a function of M, what is the slope of the graph of this function? (b) what is M?

(c) When the average annual earnings for males reach $65,000, what does the equation predict for the average annual earnings for females?

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  1. 10 August, 21:16
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    a) m = 0.78

    b) Average annual earnings by Males

    c) F = $ 30,548.685

    Step-by-step explanation:

    Given:

    - The relationship between the average annual earning of Females F is expressed as a function of earnings by males M as:

    F = 0.78*M - 1.315

    Find:

    (a) Viewing F as a function of M, what is the slope of the graph of this function?

    (b) what is M?

    (c) When the average annual earnings for males reach $65,000, what does the equation predict for the average annual earnings for females?

    Solution:

    a)

    - The given expression can be compared with a linear equation of the form:

    y = m*x + c

    Where,

    y is the dependent variable

    m is the slope of the graph

    x is the independent variable

    c is the intercept when x = 0

    - So for our case, y = F, m = 0.78, x = M, c = - 1.315

    b)

    - The variable M is the independent variable with the domain [ 0, infinity ] denotes the average annual earnings of Males in dollars ($).

    c)

    - When average annual earnings by males is $ 65,000 i. e M = 65,000, We compute F by the given expression:

    F = 0.47 * 65,000 - 1.315

    F = $ 30,548.685

    - The average annual earning by females is $ 30,549 when earning by males reach $65,000.
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