Answer:
3 feet in 5s
Explanation:
Consider the complete question is,
'If the relationship between distance y in feet and time x in seconds is proportional, which rate is represented by y/x=0.6?
a. 3 feet in 5s
b. 3 feet in 9s
c. 10 feet in 6s
d. 18 feet in 3s'
If y = 3 ft, x = 5 sec

If y = 3 ft, x = 9 sec

If y = 10 ft, x = 6 sec

If y = 18 ft, x = 3 sec

Hence, the required rate would be 3 feet in 5s