Question 307045
1) 


log(x+2)+log(x-1)=1


log[(x+2)(x-1)]=1


(x+2)(x-1)=10^1


(x+2)(x-1)=10


x^2+x-2=10


x^2+x-12=0


(x+4)(x-3)=0


x+4=0 or x-3=0 


x=-4 (ignore) or x=3



only answer is x=3




2)


y=a*b^x


6=a*b^2


a=6/b^2


y=a*b^x


8=(6/b^2)*b^6


8=6b^4


b=(8/6)^(1/4)


b = 1.07456993


a=6/b^2


a=6/(1.07456993)^2



a=5.19615244


equation is y = 5.19615244*1.07456993^x




3) 


Is equation supposed to be linear, quadratic, cubic, etc?