1. can't be determined cause no info given on the rate of which the population is growing.
2. can't be determined/not true because the initial population of a could be less than b.
3. can't be determined/not true because we don't have enough info to tell how fast they grow and decline.
Answer:
y=20
Step-by-step explanation:
0.6(y-10)=6
0.6y-6=6
0.6y=6+6
0.6y=12
y=12/0.6
y=20
the mistake is added 10 to both sides
Answer:
=
= 
Step-by-step explanation:
triangle ADE and triangle ABC are similar
therefore, the ratio of their corresponding sides are equal