Please help i don’t want to go to summer school, 10 points

5. 8n

6. 8 + 3n

7. 18 - 3D

8.

9. 15 + 2D

Step-by-step explanation:

5. Let's assign a number as 'n'. In this question, it is asking for the product of twice a number and four. We can write this as: 2n · 4, or 8n.

6. 8 Increased by three times a number can be written as:

       8+ 3n

7. If we are subtracting "3 times D", we can write it as: 18- 3D.

8. One-forth of '15+x' becomes .

9. Adding the product of "2 and D" to 15 gives us 15 + 2D.

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1