5x+15=90 what do the x equal

Which compound inequality could be represented by the graph?

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?

Simplify each expression. use positive exponents. show work . (x –2 y –4 x 3 ) –2