Answer:
4/6 or 66.67 percent
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
8x + 4 = 27 + 6x - 15
Combine Like Terms:
8x + 4 = 12 + 6x
Combine Like Terms:
2x = 8
Combine Like Terms:
X = 4
aerage rate of change is just the slope from the endpoints of teh interval
ie 
assuming you mean 
evalaute f(5) and f(1)
f(5)=480(0.3)^5=1.1664
f(1)=480(0.3)^1=144
average rate of change=(1.1664-144)/(5-1)=-35.7084
the average rate of change of the function on the interval x=1 to x=5 is -35.7084