How many unknowns does a system of equations have

What is 0.25 divided by 1.075?

34*17 using a area model

The price h of a recently bought house plus 10% property tax

With a short time remaining in the day, a delivery driver has time to make deliveries at 6 locations among the 9 locations remaining. How many different routes are possible?

You buy a computer for $1200. The value of the computer decreases by 30% each year. Find the value of the computer after 4 years.

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.