Convert 1,920,000,000 minutes into hours

if the sum of a number and four is doubled the result is seven less than twice the number. find the number

What is the diameter of this circle is 30x inchess

Peter is reading a 193-page book. He has read three pages more than one fourth of the number of pages he hasnt yet read.

When modeling word problems as mathematical equations, which of the following is a synonym for the division operation?

Order 2.614; 2.146; 2.46; 2.164 from least to greatest

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.