Work out the area of a triangle with a height of 3.8cm and a base length of 2.1cm

Given the graph below state whether or not the relation is a function, and give the domain and range.

What is not true about kl and mn? what is mn? (show your work)

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