Question

how many plants were $1\frac{1}{2}$ feet tall?
height of plants
(there is a line plot with the title height of plants and the x - axis labeled with height values: 1, $1\frac{1}{4}$, $1\frac{1}{2}$, $1\frac{3}{4}$, 2, $2\frac{1}{4}$, $2\frac{1}{2}$, $2\frac{3}{4}$. each x represents a plant. the number of xs at each mark: 1 at 1, 2 at $1\frac{1}{4}$, 3 at $1\frac{1}{2}$, 1 at $1\frac{3}{4}$, 5 at 2, 2 at $2\frac{1}{4}$, 4 at $2\frac{1}{2}$, 1 at $2\frac{3}{4}$)

Explanation:

Step1: Locate $1\frac{1}{2}$ on the line

Identify the mark for $1\frac{1}{2}$ feet.

Step2: Count the X's above the mark

Count all the "X" symbols aligned with $1\frac{1}{2}$.
<Expression>Count = 1 + 1 + 1 = 3</Expression>

Answer:

3