1.
Use substitution to solve the system of equations given below.
y
= 2
x
5
x
-
y
= -24
A.
(-4, -8)
B.
(-8, -16)
C.
infinitely many solutions
D.
no solution
Hint
2.
Use substitution to solve the system of equations given below.
8
x
- 4
y
= 16
2
x
-
y
= 4
A.
infinitely many solutions
B.
(2, 0)
C.
(0, -4)
D.
no solution
Hint
3.
Use substitution to solve the system of equations given below.
A.
B.
infinitely many solutions
C.
(-5, 5)
D.
no solution
Hint
4.
Use substitution to solve the system of equations.
5
x
+ 5
y
= -30
2
x
-
y
= 15
A.
no solution
B.
(21, 27)
C.
(3, -9)
D.
infinitely many solutions
Hint
5.
Brenda and Amparo left their homes for their morning runs at the same time. Brenda can run a 10-minute mile and Amparo can run a 12-minute mile. Combined, they ran 15 miles in a total of 2 hours and 42 minutes (162 minutes). How many miles did each woman run?
A.
Brenda ran 11 miles; Amparo ran 4 miles.
B.
Brenda ran 8 miles; Amparo ran 7 miles
C.
Brenda ran 9 miles; Amparo ran 6 miles
D.
Brenda ran 10 miles; Amparo ran 5 miles
Hint