1.
Solve
for
n
by the method of determinants.
A.
B.
C.
D.
Hint
2.
Solve
by the method of determinants.
A.
B.
C.
D.
Hint
3.
Which of the following cannot be true concerning solving a system of equations by determinants?
A.
B.
C.
ed
-
bf
= 0
D.
Hint
4.
Solve
by the method of determinants.
A.
(2, -1, -2)
B.
(2, -2, 1)
C.
(1, -1, 2)
D.
(-1, 1, -2)
Hint
5.
Vince and Brian each need two kinds of items at the store. Vince bought 10 of item
A
and 14 of item
B
and spent $97. Brian bought 8 of item
A
and 25 of item
B
, and spent $119. How much did each item cost?
A.
item
A
= $750
item
B
= $3.50
B.
item
A
= $5
item
B
= $3.50
C.
item
A
= $5.50
item
B
= $3
D.
item
A
= $4.50
item
B
= $3
Hint