Question

To lower her energy costs, Yun would like to replace her rectangular storefront windows with low-emissivity glass that costs $20 per square foot. The window measures 9 by 6.5 feet, and she can spend at most $900. (A) How much glass does she need? (B) Can she afford the low-e glass for this window?

a) (A) 120 square feet, (B) Yes
b) (A) 117 square feet, (B) No
c) (A) 130 square feet, (B) Yes
d) (A) 126 square feet, (B) No

Answer 1

Yun needs 58.5 square feet of glass and cannot afford the low-e glass for her storefront window.

Step-by-step explanation:

To find the amount of glass needed, we need to calculate the area of the window. The window measures 9 by 6.5 feet, so the area is 9 feet multiplied by 6.5 feet, which equals 58.5 square feet. Therefore, Yun needs 58.5 square feet of glass.

To determine if Yun can afford the low-e glass, we need to calculate the cost. The low-e glass costs $20 per square foot, so the total cost is 58.5 square feet multiplied by $20, which equals $1,170. Since Yun can spend at most $900, she cannot afford the low-e glass for this window.