The perimeter of a rectangle measures 24 inches. one side measures 7 inches. what does the missing length measure?

Can someone pls ! pls answer all. no explanation needed..

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.