What are the excluded values of 2x^2-7x-4/x^2-5x+4

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

You are designing a rectangular pet pen for your new baby puppy. you have 30 feet of fencing you would like the fencing to be 6 1/3 feet longer than the width

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left