1. Check the prices of phones from different stores.
2. Do some research to see what is the average cost of the phone.
3. Check for possible discounts.
Hope this helps :)
So you subtitute y=3x into
2x+y=15
so
2x+(3x)=15
add like terms
5x=15
divide both sides by 5
x=3
subtitute x=3 into first equation (y=3x)
y=3(3)
y=9
21Step-by-step explanation:
Answer:
3rd one thank you let me know if u got it rigbt
