Which shows two expressions that are equivalent to (Negative 7) (Negative 15) (Negative 5)?

Is this a polynomial function? i need to know asap

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²