Answer:To find how many birthday cakes Mark can make in 5 days, we first find how many he can make per day:49 \text{ cakes} ÷ 7 \text{ days} = 7 cakes per day}Then multiply by 5:7 \text{ cakes/day} × 5 \text{ days} = \boxed{35} \text{ cakes}✅ Mark can make 35 birthday cakes in 5 days