Randy is selling coupon books. He's going to make a line plot of his sales data.
Day | Coupon books sold
:-: | :-: | :-:
Monday | $17$
Tuesday | $15$
Wednesday | $17$
Thursday | $14$
Friday | $17$
**How many plot points will represent days on which $17$ books were sold?**
[[☃ input-number 1]] points