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.

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to

associative property hopes this ! : )

step-by-step explanation: