QUESTION IMAGE
Question
muriel has kept track of her income and expenses for the week in the spreadsheet below. how much was muriels restaurant bill?
| a | b | c |
|---|---|---|
| beginning balance | $380.29 | |
| interest income | $18.10 | |
| groceries | -$61.39 | |
| restaurant bill | ||
| paycheck | $476.24 | |
| gas | -$35.00 | |
| ending balance | $735.69 |
a. $17.66
b. $42.55
c. $6.35
d. $112.55
Step1: Establecer la ecuación
Sea $x$ el monto de la factura del restaurante. La ecuación para el saldo final es $380.29 + 18.10-61.39 - x+476.24 - 35.00=735.69$.
Step2: Simplificar el lado izquierdo de la ecuación
$380.29+18.10 - 61.39+476.24 - 35.00=778.24$. Entonces la ecuación se convierte en $778.24 - x=735.69$.
Step3: Resolver para $x$
Sumamos $x$ a ambos lados: $778.24=735.69 + x$. Luego restamos $735.69$ de ambos lados: $x = 778.24 - 735.69$.
$x=42.55$.
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B. $42.55$