Answer:
Lavania observed 39 fruit flies after 6 days of observation
Step-by-step explanation:
Let x be the number of fruit flies on the first day of Lavania's study.
After 6 days she had nine more than five times as many fruit flies as when she began the study.
Five times as many fruit flies as when she began the study = 5x
Nine more than five times as many fruit flies as when she began the study=5x+9
The expression to find the population of fruit flies Lavania observed after 6 days is 5x+9
If she observes 20 fruit flies on the first day of the study, then x=6, then

Answer:
The court house tower should be 51 feet tall.
Step-by-step explanation:
2.5+2.5=5 feet because 2+2=4 and 0.5+0.5=1. 4+1=5
25.5+25.5=51 because 25+25=50 and 0.5+0.5=1. 50+1=51
Answer: square root 50 that does not belong
Step-by-step explanation: