Norachai and six friends went out to eat. they decided to split the bill evenly. each person paid $9. what was the total cost?

Find the solution of system of equation y= x-4 y=4x+2

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

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