Is (9,-5) a solution to the inequality y < -1/3x -2?
yes
no

No

Step-by-step explanation:

put in 9 for x

y<-\frac{1}{3} 9-2

y<-3 -2

y<-5

then put in -5 for y

-5<-5

Since they are the same number that makes the equation impossible

Hope that helps :)

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)