What is the remainder when x4 - 5x3 + 3x2 - 2x +7 is divided by x - 1?

What is the value of x? enter your answer in the box. photo attached.

What makes a trapezoid an isosceles trapezoid?

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?