Some students were asked how many pens they were carrying in their backpacks. the data is given in this frequency table. what is the mean number of pens carried by these students in their backpacks?
pens frequency
0 4
1 5
2 8
3 4
4 3
5 1
a.2
b.3.5
c.4
d.5.5

whats the

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles