**Answer:**

4/5

**Step-by-step explanation:**

there are 5 20s in 100 so 20 % is equal 1/5 so take 1/5 away and you get 4/5

**Answer:**

$891

**Step-by-step explanation:**

This is Your Answer: $891, Steps below

% discount = ((sale price)/(regular price) -1)*100%

.. = (2.25/3.80 -1)*100%

.. = (0.5921 -1)*100%

.. = -0.4079*100%

.. = -40.79%

The discount is about 41% from the regular price.

**Answer:**

**Step-by-step explanation:**

Note that

= = 8, and

= =

Thus the expression simplifies to

8 ×

= ← cancel numerator/denominator by 4

= ← in simplest form

**Answer:**

It is the first one 1/3(p+45).