Mary buys a laptop computer for $1200. Each year, the value of her laptop decreases by $80. Write the steps that describe the value of Mary’s laptop based on the number of years she has owned it.

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

How do i multiply two digit numbers