1.
What best describes the equation 2(4 + 6) = 20?
A.
open
B.
false
C.
true
D.
none of these
Hint
2.
What best describes the equation 14 - 2
x
+ 10?
A.
true
B.
none of these
C.
open
D.
false
Hint
3.
What best describes the equation 10 ÷ 4 = 2?
A.
false
B.
true
C.
open
D.
none of these
Hint
4.
Which is a solution to the equation
w
+ 5 = 12?
A.
17
B.
6
C.
8
D.
7
Hint
5.
Which is a solution to the equation
?
A.
25
B.
8
C.
4
D.
32
Hint