The length of a rectangle is 5ft more than twice the width and teh area of the rectabgle is 42ft squared. what are the dimensions?

The total number of photos on hannah’s camera is a linear function of how long she was in rome. she already had 44 photos on her camera when she arrived. then she took 24 photos each day for 6 days. what is the rate of change of the linear function that represents this

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.