Work out area of trapezium? b= 12cm, 7cm side=8cm h=7cm

Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

What is the average rate of change for this function for the interval from x=2 to x=4 ?