1. Problem: Interpret the function $c(x) = 0.19x + 38$ for $x=1500$ kilowatt-hours.
2. Formula: $c(x) = 0.19x + 38$ where $x$ is kilowatt-hours and $c(x)$ is total cost.
3. Calculate $c(1500)$:
$$c(1500) = 0.19 \times 1500 + 38$$
$$= 285 + 38$$
$$= 323$$
4. Interpretation: Customers pay 323 if they use 1500 kilowatt-hours.
Final answer: Option A.
---
q_count: 15
Electricity Cost A39A02
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.