Plz help!!! What is 19.2×108 minutes in hours?

3.200×109 ​h​

3.200×107 ​h​

1.152×1011 ​h​

1.152×107 ​h

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.