The rule of the function is to multiply the input by 3, since one yard is equal in length to three feet.
So, if the input is 15.4, the output will be

Answer:
87 x 54 - 200 divided by 7
solving-4669[3|7] , 4669.428571
answer-32686.7
Step-by-step explanation:
Im not sure what the question is asking but my guess would be c)18.
Number 3 i would say i think it is