A cap is 6.4cm tall, not including a 0.6cm lip. Cups are stacked inside one another. select the function that represents the height of a stack of cups in terms of the number of cups in the stack
The number of cups in a 18.4 cm high stack is:
3
9
15
20
The function that represents the height of a stack of cups in terms of the number of cups in the stack is:
Height = (6.4cm + 0.6cm) * number of cups
Plugging in the values:
Height = (7cm) * number of cups
To find the number of cups in a 18.4 cm high stack:
18.4 = 7 * number of cups
number of cups = 18.4 / 7
number of cups ≈ 2.63
Since we can't have a fraction of a cup, the closest whole number would be 3.
Therefore, the number of cups in a 18.4 cm high stack is:
3.