Problem 7 of 34fun-007
A candle is lit. Its height, in centimeters, hours later is given by . By how many centimeters does the height of the candle decrease each hour?
Try it first
The walkthrough opens once you check an answer.
Solution walkthrough1:24
- A linear model is a starting amount and a steady change: .
- At : . The candle starts cm tall.
- At : . At : . Each hour the height is cm less.
- The number multiplying is the slope, the change per hour. It is : a decrease of cm.
- Traps: is the starting height, is the height after hour, is the hours until it is gone.