answer the equation please <33

Answer: Total cost = 4m
Step-by-step explanation:
Each meal is $4, so the total would be the number of meals times $4/meal: Total = 4m
Answer:
dₙ = (m-1)*4
Step-by-step explanation:
d1: initial dollar d1=0
dₙ = (m-1)*4
d₁ = (1-1)*4 = 0
d₂ = (2-1)*4 = 4
d₃ = (3-1)*4 = 8