Question

Sanjay and his friends are doing a physics lab on air pressure. First, they fill a balloon with air until it reaches a pressure of 300 kilopascals. Then they poke the balloon and measure its pressure over time. According to their measurements, the balloon appears to be losing pressure at a rate of 15% every hour. If this trend continues, what will the pressure be in 8 hours?
If necessary, round your answer to the nearest tenth

Answer 1

Answer: After 8 hours the pressure will be at -60?

Explanation: not sure how the balloon can reach -60 kilopascals but 15% of 300 is 45 and 45 x 8(hours) is 360. 300 - 360 is -60