Final answer:
The equation ℓ = 1.25m represents the length of Maya's hair in centimeters as a function of the number of months since she shaved her head.
Step-by-step explanation:
The equation that represents the length of Maya's hair, ℓ = 1.25m, shows that the length of her hair, denoted by ℓ, is equal to 1.25 times the number of months, denoted by m, since she shaved her head.
For example, if Maya has let her hair grow for 5 months, we can substitute m = 5 into the equation to find ℓ = 1.25(5) = 6.25 cm.
Therefore, after 5 months of growth, Maya's hair would be approximately 6.25 cm long.