Exercise 24 Page 25

To write an algebraic expression of the given situation, we should first define the variable. The amount of gas changes each day meaning the variable will be the number of days.

Variable Let d be the number of days. Next, we will construct an organized table to write the algebraic expression.

Verbal Expression	Algebraic Expression
Initial amount of gas (gal)	25
Decrease in the amount of gas each day (gal)	1.5
Number of days	d
Multiply the decrease by the number of days	1.5* d
Subtract from the initial number of gallons	25- 1.5 d