8.1 = 0.9a, how do you solve?

You purchase a cell phone for $125. The value of the cell phone decreases by about $20 annually. write a function that models the value of the cell phone over time. then find the value of the cell phone after 3 years.

How do you solve - 2 2/5 + 4/25?

Heres a trick for yall methmaticians if 9x3=39 4x7=39 6x2=20 whats 8x5?

Solve the following equations then place the correct number in the box provided. X + 8 = 6 X =

If the store purchase an item at a wholesale cost of 3.50 per item and it is sold at a retail value of 5.00 per item what is the gross profit percentage of the item

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.