Question

complete the statement that describes the situation. kelly had $80 saved before she started adding money from walking dogs. she earns ____ for each dog she walks. $4 $8 $10 $15

Explanation:

Step1: Identify initial savings (y-intercept)

The y-intercept is the value when $x=0$, which is $\$80$ (given, matches the graph).

Step2: Pick a point to calculate slope

Choose the point $(x=12, y=160)$. Slope = $\frac{\text{Change in } y}{\text{Change in } x}$

Step3: Calculate earnings per dog

$\text{Slope} = \frac{160 - 80}{12 - 0} = \frac{80}{12} \approx 6.67$? No, use a clearer point: $(x=20, y=240)$
$\text{Slope} = \frac{240 - 80}{20 - 0} = \frac{160}{20} = 8$

Answer:

Kelly had $\$80$ saved before she started adding money from walking dogs. She earns $\$8$ for each dog she walks.