**Answer:**

**84**

an 84 on the last exam would give the student an 80 for the marking period

**Answer:**

B, or second answer choice

**Step-by-step explanation:**

y - = m(x - )

y - 1/3 = 3/4 (x - 4)

B

**Answer:**

Koichi was here

**Step-by-step explanation:**

Ratio of pink marbles to white marbles is:

Let the number of pink marbles are denoted by

and the number of white marbles are denoted by

Then,

i.e.,

The percentage of pink marbles contain in bag is given by: