Answer: Option 'B' is correct.
Step-by-step explanation:
Since we have given that
Price to enter the carnival = $4
Cost of per ride = $0.50
Since , Number of rides = 7
So, Total amount he will spend is given by
Since Option 'C' is to be eliminate as $9 cant be possible if we take $9 as our answer,
then first we subtract $4 from $5 to get the cost of rides
i.e. 9-4=$5
Now, number of rides will be
which is wrong as we have given that he rode only 7 rides , So, Option 'C' is not correct.
Hence, Option 'B' is correct.