After 4 4
new students joined a class, the class had 32
32
students.

Which equation can be used to find n
n
, the number of students in the class before the 4
4
new students joined?
A. n4=32
n
4
=
32

B. n−4=32
n
−
4
=
32

C. 4n=32
4
n
=
32

D. n+4=32
n
+
4
=
32

Which statement is true about the function f(x)= square root -x ? the domain of the graph is all real numbers. the range of the graph is all real numbers. the domain of the graph is all real numbers less than or equal to 0. the range of the graph is all real numbers less than or equal to 0.