I think the answer is $30 but I’m not entirely sure
Answer:
literally 1
Step-by-step explanation:
scooby ate my scooby snax
Since Barb has 9 and Trisha has 3 times as many you can use the equation 9x3 which equals 27
3 to the 4th power is 81, 3 times itself 4 times.
Hope this helps, if not, comment below please!!!!