Answer:
Julia brother
Step-by-step explanation:
Given that Julia and her brother, Emilio, are both saving to buy a new computer that costs $1,000.
Julia savings per week =100 $
Hence no of weeks required to save full 1000 = 1000/100 = 10
x =10 weeks for Julia
For Julia brother
[tex]y=10^{x-2}[/tex]
When y =1000 we have
[tex]1000=10^{x-2}\\x-2=3\\x=5[/tex]
Hence Julia brother will reach their 1000 goal first in 5 weeks, and Julia in 10 weeks.
