Question

1. Simplify. 5–1(3–2) (1 point)45

15–3
152

2. Simplify. (1 point)




3. Write in scientific notation. 0.0042 (1 point)42 × 10–2
4.2 × 10–4
4.2 × 10–3
.42 × 10–4

4. Write in standard notation. 6.12 × 103 (1 point)6,120
612
61,200
61.2

5. Simplify. Write in scientific notation. 0.5(8 × 105) (1 point)8 × 55
4 × 55
8 × 105
4 × 105

6. Simplify. Write in scientific notation. (9 × 10–3)2 (1 point)8.1 × 10–5
81 × 10–4
81 × 10–3
8.1 × 10–6

7. Evaluate a–4b2 for a = –2 and b = 4. (1 point)2

3
4

8. Is the following statement always, neve