1.
Solve
A.
7
B.
C.
D.
10
Hint
2.
Solve
.
A.
0, 1
B.
-3, -1
C.
-3, 1
D.
1
Hint
3.
Solve
A.
-1, 4
B.
-1
C.
1, 4
D.
0
Hint
4.
Suppose that Pam could build a house in
months and Jerry could build a house in
months. If they work together, how long would it take them to build the house?
A.
months
B.
10 months
C.
5 months
D.
months
Hint
5.
Solve
.
A.
0 and 7
B.
–
C.
–
and 7
D.
7
Hint
months and Jerry could build a house in 
months. If they work together, how long would it take them to build the house?