Question

(b) how much would it cost her to buy a 7 kilogram bag of coffee beans? $

Explanation:

Step1: Identify unit cost and quantity

Unit cost = $\$6.60$ per kg, quantity = $7$ kg

Step2: Calculate total cost

Total cost = Unit cost $\times$ Quantity = $\$6.60 \times 7$

Answer:

$\$46.20$