Mandy's energetic Uncle Bob loves roller coasters, and he wants to ride them alli One day, Mandy prints out a list of all the roller coasters in the United States. After reading it with Uncle Bob, they discover he has already ridden 93 of the coasters. There are still 400 coasters left to ride, Which equation can you use to find the total number of roller coasters \( c \) on Mandy's list? \[ \frac{c}{93}=400 \] \[ 93 c=400 \] Solve this equation for \( c \) to find the number of roller coasters on Mandy's list, roller coasters

To find the total number of roller coasters \( c \) on Mandy's list, we need to set up the correct equation based on the information given. Uncle Bob has already ridden 93 coasters, and there are still 400 coasters left to ride. Therefore, the total number of roller coasters can be expressed as: \[ c = 93 + 400 \] Now, let's solve for \( c \): \[ c = 93 + 400 \] \[ c = 493 \] So, the total number of roller coasters on Mandy's list is **493**. Now, regarding the equations you provided: 1. \(\frac{c}{93} = 400\) is incorrect because it implies that the total number of coasters divided by the number of coasters already ridden equals the number of coasters left, which does not make sense in this context. 2. \(93c = 400\) is also incorrect because it suggests that 93 times the total number of coasters equals 400, which is not relevant to the problem. The correct approach is simply to add the number of coasters already ridden to the number of coasters left to find the total. Thus, the total number of roller coasters is **493**.