What property is this, 5x23x2

Each morning isaac walks. 3 kilometers to leonards house feom there they walk 1.4 kilometers to school how far does isaac walk each morning?

I cannot figure this out. Anyone? 5 (-3x - 2) - (x - 3) = - 4 (4x + 5) + 13

Put x^2+8x+18 in standard form

Ruth found out that she can paint 1/4 room in 2/3 of an hour. how much of the room can she paint in one hour

Say that Thailand has a workforce of 35,709,487 people, each of whom earns an average salary of (equivalent USD) $8,630 annually.

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.