Answer: It would cost $17.70 to send 118 text messages
Step-by-step explanation:
\$1.35 ÷ \color{steelblue}{9}\text{ texts}=
$1.35÷9 texts=
\,\,\text{\color{indianred}{\$0.15} per text}
$0.15 per text
\color{indianred}{\$0.15}\text{ per text} × \color{seagreen}{118}\text{ texts}=
$0.15 per text×118 texts=
\,\,\text{\color{purple}{\$17.70} }
$17.70
\frac{\text{dollars}}{\text{texts}}=
texts
dollars
=
\,\,\frac{\text{dollars}}{\text{texts}}
texts
dollars
\frac{1.35}{9}=
9
1.35
=
\,\,\frac{\color{purple}{x}}{\color{seagreen}{118}}
118
x
We don't know how many dollars for 118 texts- call it xx
1.35\cdot\color{seagreen}{118}=
1.35⋅118=
\,\,9\cdot\color{purple}{x}
9⋅x
159.3=
159.3=
\,\,9\color{purple}{x}
9x
\frac{159.3}{9}=
9
159.3
=
\,\,\frac{9\color{purple}{x}}{9}
9
9x
Undo multiplication by dividing both sides by 9
17.7=
17.7=
\,\,\color{purple}{x}
x
It would cost $17.70 to send 118 text messages
