Select all the expressions that are equivalent to 3x + 9 + 3.0 + 9.,
Please help

Option 1,2,5 and 7 are correct.

Step-by-step explanation:

To find : Which of the following expressions are equivalent to the expression 4x + 8?

Solution :

We solve every given options,

1)

It is equivalent.

2)

It is equivalent.

3)

It is not equivalent.

4)

It is not equivalent.

5)

It is equivalent.

6)

It is not equivalent.

7)

It is equivalent.

Therefore, Option 1,2,5 and 7 are correct.

Step-by-step explanation:

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000

what is all that apply?