Final answer:
The correct algebraic expression for the phrase '15 miles less than Devra biked' is option B: d - 15.
Step-by-step explanation:
The correct algebraic expression for the phrase '15 miles less than Devra biked' is option
B. d - 15
To understand why, let's break down the phrase. 'Devra biked' represents the variable 'd' (the distance Devra biked). '15 miles less than' indicates subtraction, so we subtract 15 from 'd', resulting in 'd - 15'.