A.

r = -1
s = 2
t = 3
u = 5

QUESTIONS:
1. 6s + 2
2. 5r + 4t
3. 3 (t + u)
4. 4u + 6(2t - u)
5. 2u² + 10s

CHOICES:
a. 7
b. 70
c. 26
d. 24
e. 14

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