**Step-by-step explanation:**

1:

(6×10)+(9×10)

(60)+(90)=

15

2:

(7×1)+(3×10)

(7)+(30)=

37

3:

(8.8×100)+(3×100)

(880)+(300)=

1180

**Answer:**

The first line.

**Step-by-step explanation:**

If we let x represent "a number", then "a number divided by 3" is x/3. The denominator is missing on the first line.

Further, this "is 4 more than -11", so is = 4 + (-11). The constant 4 is on the wrong side of the equal sign in line 1.

_____

The solution should be ...

... x/3 = 4 + (-11)

... x = 3·(-7)

... x = -21

___

*Check*

-21 divided by 3 is -7. That is 4 more than -11.

O baby, this is gonna be kinda hard

The answer is ZBM.

Have a lovely day!

**Answer:**

C) 2400

**Step-by-step explanation:**

Combinations are a way to calculate the total outcomes of an event where order of the outcomes does not matter.

Computers = 10

Printers = 3

Scanners = 5

Telephone = 8

Copiers = 2

Possible outcome = 10 x 3 x 5 x 8 x 2 = 2400