Answer:
yes. it would technically be -1
Step-by-step explanation:
Because fractions are technically division, 6 ÷-6 = -1
A trick for solving this on a calculator is entering 12880*.68 twenty times
Or f(t)=a(l-r)^t
t=time
a=initial amount
r=rate of decrease
f(20)=12880(l-.32)^20
It is about 5.75564656018
(x+4) and (y+4) both have two terms..terms are separated by addition/subtraction operators