The average of four numbers is 98. if three of those numbers are 86, 87, and 91, what is the fourth number?

Plz, ! the box plot below shows the total amount of time, in minutes, the students of a class surf the internet every day: a box plot is shown.part a: list two pieces of information that are provided by the graph and one piece of information that is not provided by the graph. (4 points) part b: calculate the interquartile range of the data, and explain in a sentence or two what it represents. (4 points) part c: explain what affect, if any, there will be if an outlier is present. (2 points)

7x+8y=-18, 4x-9y=-3 solve the system of equations

What is the solution of log2  (3x  -  7)  =  3? 4 5