Marissa has taken four 100- point tests in math this semester. her mean score is 89%. what score does she need on test 5 so the mean will be 90%

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .

The graph represents f(x)=[x]+3. what is f(-2.2)?