A un institut, dos de cada tres alumnes fan servir una mascareta reutilitzable i, tres de
cada cinc prefereixen portar-ne una d’un sol ús.
Quin tipus de mascareta és el més emprat en
aquest institut?

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

answer4 to the second power is 16

and 4 to the third power is 64,

faster, im not sure why but i know it is faster

pls refer ro the top for answer