Exam 1 Review, Ch 1 (Sections 1.3, 1.6-1.9)
Math 1130 Elementary Algebra
Work these problems on a separate sheet of paper. Check your answers with the key on the
back.
5
1
1. 3 7 + 2 3
1
1
2. 3 6 − 1 4
3. 7
3
8
÷
5
12
4. −3 − 9
5. −12 − (−5)
6. (−3)(−7)(−2)
7. −42
8. (−2)4
9. (−3)3
10. (2 + 33 ) − (4 − 2 ∙ 5)
11. 7 − [(6 − 9(−2)) ÷ 6 + 2]
12.
5+2(10 −4 ∙2)
−6 ÷ (2)(3)
13. Evaluate the expression for the given value. 2𝑥 2 − 𝑥 − 9; 𝑥 = −3
Solutions:
1.
2.
3.
127
21
23
12
10
4. -12
5. -7
6. -42
7. -16
8. 16
9. -27
11. 1
12. -1
13. 12
11
𝑜𝑟 1 12
177
10. 35
1
𝑜𝑟 6 21
7
𝑜𝑟 17 10