Find the solutions to the equation below. Check all that apply.
x² - 4=0
A. X=2
B. x = -1
C. x = 1
.
D. X = -2
E. X = 4
F. X = -4

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)