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AmhI does computer repairs in his home he charges a set fee to analyze the problem. Plus an hourly rate for his labor. The table below show c the total charge to his customers. Based on h the number of hours of labor required. Which equation could AmhI use to determine his costumers total charge. Number of hours (h) Total charge (c) 2 $39 4 $64 6 $87

Respuesta :

The equation for total charge to his customer for 2 hours is,

[tex]39=2h+f[/tex]

For 4 hours,

[tex]63=f+4h[/tex]

Simplify the equation to obtain the value of h.

[tex]\begin{gathered} 2h+f-(f+4h)=39-63 \\ -2h=-24 \\ h=12 \end{gathered}[/tex]

Substitute 12 for h in the equation 2h + f =39 to obtain the value of f.

[tex]\begin{gathered} 2\cdot12+f=39 \\ f=39-24 \\ =15 \end{gathered}[/tex]

So equation to determine his customers total charge is,

[tex]C=15+12h[/tex]

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