Find the common difference of the arithmetic sequence ?

What value of x is in the solution set of 4x – 12 s 16 + 8x?

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

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2