I NEED HELP SO BAD I WILL GIVE CROWN
A mechanic had 412 gallons of motor oil at the start of the day. At the end of the day, only 5 pints remained.

How many pints of motor oil did the mechanic use during the day?

4 pt

13 pt

19 pt

31 pt

Can someone explain to me how to do

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%

Math i have no idea how to do a and b