-3.17 + x = 3.22 but -3.17 + 0.05 = -3.12, and i want to get 3.22 as my answer

-0.5

Step-by-step explanation:

if you have 2 negatives that equals a positive

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