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A piano teacher charges $15 per hour plus a one-time fee of $7 for a music book. The cost of the lessons, y, are summarized in the followingtable, where a represents the number of hours.

A piano teacher charges $15 per hour plus a one-time fee of $7 for a music book. The cost of the lessons, y, are summarized in the followingtable, where a repre class=

Answer :

Given the linear equation.

[tex]y=15x+7[/tex]

To find the corresponding values of y with given values of x, we will substitute the value of x in the equation and solve for y

[tex]\begin{gathered} For\text{ x=4} \\ y=15x+7 \\ y=15(4)+7 \\ y=60+7=67 \end{gathered}[/tex][tex]\begin{gathered} For\text{ x}\rightarrow5 \\ y=15x+7 \\ y=15(5)+7 \\ y=75+7 \\ y=82 \end{gathered}[/tex]

Hence, the two numbers missing in the table are 67 and 82

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