Answer:
It’s either D as the answer or A
Step-by-step explanation:
Answer:
6 mph
Step-by-step explanation:
3 miles -----> takes 30 minutes
recall that 30 minutes = 1/2 an hour = 0.5 hours
hence,
3 miles -----> takes 30 minutes = 0.5 hrs
therefore her rate of change (i.e speed) in mph
= number of miles ran ÷ time taken in hours
= 3miles ÷ 0.5hrs
= 6 mph
Answer: 13
Step-by-step explanation:
cost for 3 hours: 7+2(3)=13
cost for t hours: 7+2t