We have enough material to build a fence around a station that has a perimeter of 180 feet. the width of the rectangular space must be 30 1/4 feet. what is the sum of the lengths

Can some one me with these questions

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters