**Answer:**

1930g

**Step-by-step explanation:**

Mass = density × volume

Mass = 19.3×100 = 1930g

**Answer:**

8.11 and 9 1/11

**Step-by-step explanation:**

In a theatre room, there are 4 rows of chairs. There are 4 columns of chairs. How many chairs are there in the theatre room?

4x4=16

There are 16 chairs in the theatre room.

Cost of paying someone to rake her yard for for years would be $80.
The leaf blower would cost $70.
So she would save $10 buy buying the leaf blower.

**Answer:**

4 terms

**Step-by-step explanation:**

4is the number of variable terms that are in the expression 3x3y + 5x2 _ 4y + z + 9. The four variable terms in the expression are "xy", "x^2", "y" and "z"