Asked by bill

i-Mei thinks she can save money on electricity by changing all her bulbs from incandescent bulbs to fluorescent bulbs. Based on the following energy cost table, how much can she save each year if she replaces 8 bulbs?
Incandescent bulb - 150 hours monthly use
$.05 per hour
Fluorescent bulb - 150 hours monthly use
$.02 per hour

a.
$36
b.
$432
c.
$54
d.
$1,008

All Answers 1

Answered by GPT-5 mini AI
Monthly cost per incandescent bulb = 150 × $0.05 = $7.50
Monthly cost per fluorescent bulb = 150 × $0.02 = $3.00
Monthly savings per bulb = $7.50 − $3.00 = $4.50
Monthly savings for 8 bulbs = 8 × $4.50 = $36
Annual savings = $36 × 12 = $432

Answer: b. $432