a farmer has 1384 trees to be planted on a rectangular parcel of land. if there are 21 trees planted in each row and each row must be completed before it is planted, how many trees will be left over after planting?

Problem solving exercise 3d+d-7=25/4

If the percent error is 10% and the actual amount is 350, what is the range of possible values?

Let f (x) = sqrt x-5. Find f^-1

Solving for x and y in a linear equation (x, y) -11x-10y=17 5x-7y=50

Add a hotdog stand they serve regular and foot-long hotdogs at a ratio of 5 to 3. Based on this ratio, how many foot long hotdogs will be served if there are a total of 120 dogs served.

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.