Final answer:
By multiplying the original number of tulips (45) by the growth rate of 40%, Naomi gained an additional 18 tulips, resulting in a total of 63 tulips.
Step-by-step explanation:
To calculate the current number of tulips Naomi has, we start by determining the increase based on the 40% growth rate from the original number of 45 tulip bulbs. To find the increase, we multiply 45 by the growth rate in decimal form:
45 bulbs × 0.40 = 18 bulbs increase
Now, we add the increase to the original number to get the new total:
45 bulbs + 18 bulbs = 63 tulips
Therefore, after a 40% increase, Naomi now has 63 tulips.