Answer:
a)
![1.5t](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3tk0z4mfuf0mbwff3wg6r9zjbhp8weu2ey.png)
b)
![13-1.5t](https://img.qammunity.org/2020/formulas/mathematics/middle-school/6ur5s80wi1ioz0yd8e5lztozkc9i0dn570.png)
Explanation:
Given : A 13-inch candle is lit and burns at a constant rate of 1.5 inches per hour. Let t represent the number of hours that have elapsed since the candle was lit.
To find :
a) Write an expression in terms of t that represents the number of inches that have burned from the candle since it was lit.
The number of hours be 't',
A constant rate of 1.5 inches per hour.
The expression is
![1.5t](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3tk0z4mfuf0mbwff3wg6r9zjbhp8weu2ey.png)
b) Write an expression in terms of t that represents the remaining length of the candle (in inches).
A 13-inch candle is lit and burns at a constant rate of 1.5 inches per hour.
The expression is
![13-1.5t](https://img.qammunity.org/2020/formulas/mathematics/middle-school/6ur5s80wi1ioz0yd8e5lztozkc9i0dn570.png)