BBB because it has commas after the right units
Answer:

Step-by-step explanation:
If the speed is constant for 5 machines and produces x amount of toys we know that rate is defined as a constant per time:
Here the machines are constant and the rate is x toys per hour:
If 5 machines make x per hour:
Rate is x/1 hour
The the ratio of 8/5 is 1.6. Therefore for 8 machines the rate is 1.6 times more per hour than for5 machines. Therefore we can write an expression as:
Rate for 5 machines is x and for 8 machines is y:

Answer:
Point D
Step-by-step explanation:
10 minutes I'm pretty sure. My calculations may be off but at least I tried
The service fees differ by $1. The per-check fees differ by $0.01. A person would have to write 1/.01 = 100 checks for the two accounts to cost the same.