Question

6-59. lashayia is famous for her delicious brownies, which she sells at football games. the graph at right shows the relationship between the number of brownies she sells and the amount of money she earns. homework help

a. how much should she charge for 10 brownies? be sure to demonstrate your reasoning.

b. during the last football game, lashayia made $34.20. how many brownies did she sell? show your work.

(graph: sales (in dollars) on x - axis, number of brownies sold on y - axis, with a point (12, 21.6) plotted)

Explanation:

Step1: Find unit price per brownie

From the point $(12, 21.60)$, calculate the price per brownie:
$\text{Unit Price} = \frac{21.60}{12} = 1.80$

Step2: Calculate cost for 10 brownies

Multiply unit price by 10:
$\text{Cost for 10} = 1.80 \times 10$

Step3: Calculate number of brownies sold

Divide total earnings by unit price:
$\text{Number Sold} = \frac{34.20}{1.80}$

Answer:

a. $\$18.00$
b. 19 brownies