Answer:
30
Step-by-step explanation:
Answer:
the answer would be b
Step-by-step explanation:
the other 2 have negatives and the 3rd option is whole so b
Answer: 54 mph
Step-by-step explanation:
d-the distance
s+9 - the speed to the conference
d=6*(s+9)
s- is the speed on the way back home
d=7*s
so 6*(s+9)=7*s
6s+54=7s
-6s -6s
54= 7s-6s
s=54 mph
Answer:
c
Step-by-step explanation: